20121010111202 has 144 divisors (see below), whose sum is σ = 42682873571520. Its totient is φ = 6921700378560.

The previous prime is 20121010111141. The next prime is 20121010111231. The reversal of 20121010111202 is 20211101012102.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 10786049 + ... + 12513227.

Almost surely, 2^{20121010111202} is an apocalyptic number.

20121010111202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20121010111202 is an abundant number, since it is smaller than the sum of its proper divisors (22561863460318).

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

20121010111202 is a wasteful number, since it uses less digits than its factorization.

20121010111202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727269 (or 1727235 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20121010111202 its reverse (20211101012102), we get a palindrome (40332111123304).

The spelling of 20121010111202 in words is "twenty trillion, one hundred twenty-one billion, ten million, one hundred eleven thousand, two hundred two".