20103113212 has 24 divisors (see below), whose sum is σ = 43299013856. Its totient is φ = 7952879808.

The previous prime is 20103113209. The next prime is 20103113231. The reversal of 20103113212 is 21231130102.

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, 27613803 + ... + 27614530.

Almost surely, 2^20103113212 is an apocalyptic number.

It is an amenable number.

20103113212 is an abundant number, since it is smaller than the sum of its proper divisors (23195900644).

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

20103113212 is a wasteful number, since it uses less digits than its factorization.

20103113212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55228357 (or 55228355 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20103113212 its reverse (21231130102), we get a palindrome (41334243314).

The spelling of 20103113212 in words is "twenty billion, one hundred three million, one hundred thirteen thousand, two hundred twelve".