20102101012 has 24 divisors (see below), whose sum is σ = 40266959040. Its totient is φ = 8601738240.

The previous prime is 20102100989. The next prime is 20102101067. The reversal of 20102101012 is 21010120102.

It is a self number, because there is not a number n which added to its sum of digits gives 20102101012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 542062 + ... + 577957.

It is an arithmetic number, because the mean of its divisors is an integer number (1677789960).

Almost surely, 2^20102101012 is an apocalyptic number.

It is an amenable number.

20102101012 is an abundant number, since it is smaller than the sum of its proper divisors (20164858028).

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

20102101012 is a wasteful number, since it uses less digits than its factorization.

20102101012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120671 (or 1120669 counting only the distinct ones).

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

Adding to 20102101012 its reverse (21010120102), we get a palindrome (41112221114).

The spelling of 20102101012 in words is "twenty billion, one hundred two million, one hundred one thousand, twelve".