20010112212120 has 64 divisors (see below), whose sum is σ = 60067553793120. Its totient is φ = 5332721731584.

The previous prime is 20010112212119. The next prime is 20010112212143. The reversal of 20010112212120 is 2121221101002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20010112212120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51496129 + ... + 51883248.

Almost surely, 2^{20010112212120} is an apocalyptic number.

20010112212120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20010112212120 is an abundant number, since it is smaller than the sum of its proper divisors (40057441581000).

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

20010112212120 is a wasteful number, since it uses less digits than its factorization.

20010112212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103381004 (or 103381000 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20010112212120 its reverse (2121221101002), we get a palindrome (22131333313122).

The spelling of 20010112212120 in words is "twenty trillion, ten billion, one hundred twelve million, two hundred twelve thousand, one hundred twenty".