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1212102010122 = 231910632473773
BaseRepresentation
bin10001101000110110111…
…010001110010100001010
311021212122110202220220120
4101220312322032110022
5124324341103310442
62324455412404110
7153400006043253
oct21506672162412
94255573686816
101212102010122
1142805aa92453
12176ab6616636
138a3ba917c43
14429478dbb2a
15217e23ab4ec
hex11a36e8e50a

1212102010122 has 16 divisors (see below), whose sum is σ = 2551793705760. Its totient is φ = 382769055792.

The previous prime is 1212102010081. The next prime is 1212102010139. The reversal of 1212102010122 is 2210102012121.

It is a super-4 number, since 4×12121020101224 (a number of 49 digits) contains 4444 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5316236773 + ... + 5316237000.

It is an arithmetic number, because the mean of its divisors is an integer number (159487106610).

Almost surely, 21212102010122 is an apocalyptic number.

1212102010122 is an abundant number, since it is smaller than the sum of its proper divisors (1339691695638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212102010122 is a wasteful number, since it uses less digits than its factorization.

1212102010122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10632473797.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1212102010122 its reverse (2210102012121), we get a palindrome (3422204022243).

The spelling of 1212102010122 in words is "one trillion, two hundred twelve billion, one hundred two million, ten thousand, one hundred twenty-two".

Divisors: 1 2 3 6 19 38 57 114 10632473773 21264947546 31897421319 63794842638 202017001687 404034003374 606051005061 1212102010122