10021220000120 has 128 divisors (see below), whose sum is σ = 26297281584000. Its totient is φ = 3435515596800.

The previous prime is 10021220000093. The next prime is 10021220000147. The reversal of 10021220000120 is 2100002212001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10021220000093) and next prime (10021220000147).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173405630 + ... + 173463410.

It is an arithmetic number, because the mean of its divisors is an integer number (205447512375).

Almost surely, 2^{10021220000120} is an apocalyptic number.

10021220000120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10021220000120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13148640792000).

10021220000120 is an abundant number, since it is smaller than the sum of its proper divisors (16276061583880).

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

10021220000120 is a wasteful number, since it uses less digits than its factorization.

10021220000120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70454 (or 70436 counting only the distinct ones).

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

Adding to 10021220000120 its reverse (2100002212001), we get a palindrome (12121222212121).

The spelling of 10021220000120 in words is "ten trillion, twenty-one billion, two hundred twenty million, one hundred twenty", and thus it is an aban number.