20120012102101 has 16 divisors (see below), whose sum is σ = 21574450569600. Its totient is φ = 18696297630208.

The previous prime is 20120012102089. The next prime is 20120012102111. The reversal of 20120012102101 is 10120121002102.

It is a cyclic number.

It is not a de Polignac number, because 20120012102101 - 2²¹ = 20120010004949 is a prime.

It is a super-2 number, since 2×20120012102101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120012102111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8701681 + ... + 10768438.

It is an arithmetic number, because the mean of its divisors is an integer number (1348403160600).

Almost surely, 2^{20120012102101} is an apocalyptic number.

It is an amenable number.

20120012102101 is a deficient number, since it is larger than the sum of its proper divisors (1454438467499).

20120012102101 is a wasteful number, since it uses less digits than its factorization.

20120012102101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19470908.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20120012102101 its reverse (10120121002102), we get a palindrome (30240133104203).

The spelling of 20120012102101 in words is "twenty trillion, one hundred twenty billion, twelve million, one hundred two thousand, one hundred one".