20210212120 has 32 divisors (see below), whose sum is σ = 51969117600. Its totient is φ = 6929215488.

The previous prime is 20210212117. The next prime is 20210212147. The reversal of 20210212120 is 2121201202.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20210212120.

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, 36089385 + ... + 36089944.

It is an arithmetic number, because the mean of its divisors is an integer number (1624034925).

Almost surely, 2^20210212120 is an apocalyptic number.

20210212120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20210212120 is an abundant number, since it is smaller than the sum of its proper divisors (31758905480).

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

20210212120 is a wasteful number, since it uses less digits than its factorization.

20210212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72179347 (or 72179343 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20210212120 its reverse (2121201202), we get a palindrome (22331413322).

The spelling of 20210212120 in words is "twenty billion, two hundred ten million, two hundred twelve thousand, one hundred twenty".