210122220120 has 64 divisors (see below), whose sum is σ = 633119436000. Its totient is φ = 55787900928.

The previous prime is 210122220101. The next prime is 210122220127. The reversal of 210122220120 is 21022221012.

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 210122220120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210122220127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3795705 + ... + 3850664.

Almost surely, 2^210122220120 is an apocalyptic number.

210122220120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210122220120 is an abundant number, since it is smaller than the sum of its proper divisors (422997215880).

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

210122220120 is a wasteful number, since it uses less digits than its factorization.

210122220120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7646612 (or 7646608 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 210122220120 its reverse (21022221012), we get a palindrome (231144441132).

The spelling of 210122220120 in words is "two hundred ten billion, one hundred twenty-two million, two hundred twenty thousand, one hundred twenty".