10221021120120 has 64 divisors (see below), whose sum is σ = 30666457422720. Its totient is φ = 2725303937664.

The previous prime is 10221021120059. The next prime is 10221021120127. The reversal of 10221021120120 is 2102112012201.

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 10221021120120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221021120127) 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, 3624294 + ... + 5794613.

It is an arithmetic number, because the mean of its divisors is an integer number (479163397230).

Almost surely, 2^{10221021120120} is an apocalyptic number.

10221021120120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10221021120120 is an abundant number, since it is smaller than the sum of its proper divisors (20445436302600).

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

10221021120120 is a wasteful number, since it uses less digits than its factorization.

10221021120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9427964 (or 9427960 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 10221021120120 its reverse (2102112012201), we get a palindrome (12323133132321).

The spelling of 10221021120120 in words is "ten trillion, two hundred twenty-one billion, twenty-one million, one hundred twenty thousand, one hundred twenty".