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12102020101 = 23571921497
BaseRepresentation
bin10110100010101011…
…00010110000000101
31011020102002022121201
423101111202300011
5144241104120401
65320512142501
7605620321303
oct132125426005
934212068551
1012102020101
115150302906
122418b37a31
1311ab334952
1482b3b7273
154ac6c3b01
hex2d1562c05

12102020101 has 8 divisors (see below), whose sum is σ = 12650324544. Its totient is φ = 11555559840.

The previous prime is 12102020087. The next prime is 12102020141. The reversal of 12102020101 is 10102020121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12102020101 - 27 = 12102019973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102020141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 447616 + ... + 473881.

It is an arithmetic number, because the mean of its divisors is an integer number (1581290568).

Almost surely, 212102020101 is an apocalyptic number.

It is an amenable number.

12102020101 is a deficient number, since it is larger than the sum of its proper divisors (548304443).

12102020101 is an equidigital number, since it uses as much as digits as its factorization.

12102020101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922091.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 12102020101 its reverse (10102020121), we get a palindrome (22204040222).

The spelling of 12102020101 in words is "twelve billion, one hundred two million, twenty thousand, one hundred one".

Divisors: 1 23 571 13133 921497 21194431 526174787 12102020101