212021000120 has 32 divisors (see below), whose sum is σ = 477286791120. Its totient is φ = 84765815040.

The previous prime is 212021000111. The next prime is 212021000141. The reversal of 212021000120 is 21000120212.

It is a happy number.

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, 1250066 + ... + 1409505.

Almost surely, 2^212021000120 is an apocalyptic number.

212021000120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212021000120 is an abundant number, since it is smaller than the sum of its proper divisors (265265791000).

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

212021000120 is a wasteful number, since it uses less digits than its factorization.

212021000120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2661575 (or 2661571 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 212021000120 its reverse (21000120212), we get a palindrome (233021120332).

The spelling of 212021000120 in words is "two hundred twelve billion, twenty-one million, one hundred twenty", and thus it is an aban number.