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20210122012010 = 257379761783717
BaseRepresentation
bin1001001100001100010010…
…01001001011010101101010
32122120001212011002200021212
410212012021021023111222
510122110312213341020
6110552222450033122
74154063443451660
oct446061111132552
978501764080255
1020210122012010
116492078aa9717
122324a34b787a2
13b37a63670018
144dc264782c30
15250aa1c69cc5
hex12618924b56a

20210122012010 has 32 divisors (see below), whose sum is σ = 41684805048960. Its totient is φ = 6910901871552.

The previous prime is 20210122011997. The next prime is 20210122012019. The reversal of 20210122012010 is 1021022101202.

It is a super-2 number, since 2×202101220120102 (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (20210122012019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 380865329 + ... + 380918388.

It is an arithmetic number, because the mean of its divisors is an integer number (1302650157780).

Almost surely, 220210122012010 is an apocalyptic number.

20210122012010 is an abundant number, since it is smaller than the sum of its proper divisors (21474683036950).

20210122012010 is a wasteful number, since it uses less digits than its factorization.

20210122012010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761784110.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20210122012010 its reverse (1021022101202), we get a palindrome (21231144113212).

The spelling of 20210122012010 in words is "twenty trillion, two hundred ten billion, one hundred twenty-two million, twelve thousand, ten".

Divisors: 1 2 5 7 10 14 35 70 379 758 1895 2653 3790 5306 13265 26530 761783717 1523567434 3808918585 5332486019 7617837170 10664972038 26662430095 53324860190 288716028743 577432057486 1443580143715 2021012201201 2887160287430 4042024402402 10105061006005 20210122012010