120220010021 has 4 divisors (see below), whose sum is σ = 120232930944. Its totient is φ = 120207089100.

The previous prime is 120220009999. The next prime is 120220010039. The reversal of 120220010021 is 120010022021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120220010021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120220009984 and 120220010011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120220013021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6446495 + ... + 6465116.

It is an arithmetic number, because the mean of its divisors is an integer number (30058232736).

Almost surely, 2^120220010021 is an apocalyptic number.

It is an amenable number.

120220010021 is a deficient number, since it is larger than the sum of its proper divisors (12920923).

120220010021 is an equidigital number, since it uses as much as digits as its factorization.

120220010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12920922.

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

Adding to 120220010021 its reverse (120010022021), we get a palindrome (240230032042).

The spelling of 120220010021 in words is "one hundred twenty billion, two hundred twenty million, ten thousand, twenty-one".