10012212120 has 64 divisors (see below), whose sum is σ = 30044377440. Its totient is φ = 2669235200.

The previous prime is 10012212103. The next prime is 10012212131. The reversal of 10012212120 is 2121221001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 10012212096 and 10012212105.

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, 601510 + ... + 617930.

Almost surely, 2^10012212120 is an apocalyptic number.

10012212120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10012212120 is an abundant number, since it is smaller than the sum of its proper divisors (20032165320).

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

10012212120 is a wasteful number, since it uses less digits than its factorization.

10012212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21516 (or 21512 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10012212120 its reverse (2121221001), we get a palindrome (12133433121).

The spelling of 10012212120 in words is "ten billion, twelve million, two hundred twelve thousand, one hundred twenty".