10021220120 has 16 divisors (see below), whose sum is σ = 22547745360. Its totient is φ = 4008488032.

The previous prime is 10021220107. The next prime is 10021220137. The reversal of 10021220120 is 2102212001.

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 3 ways as a sum of consecutive naturals, for example, 125265212 + ... + 125265291.

It is an arithmetic number, because the mean of its divisors is an integer number (1409234085).

Almost surely, 2^10021220120 is an apocalyptic number.

10021220120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10021220120 is an abundant number, since it is smaller than the sum of its proper divisors (12526525240).

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

10021220120 is a wasteful number, since it uses less digits than its factorization.

10021220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250530514 (or 250530510 counting only the distinct ones).

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

Adding to 10021220120 its reverse (2102212001), we get a palindrome (12123432121).

The spelling of 10021220120 in words is "ten billion, twenty-one million, two hundred twenty thousand, one hundred twenty".