120020222220021 has 24 divisors (see below), whose sum is σ = 173981897443224. Its totient is φ = 79727633556480.

The previous prime is 120020222220013. The next prime is 120020222220049. The reversal of 120020222220021 is 120022222020021.

120020222220021 is a `hidden beast` number, since 1 + 20 + 0 + 202 + 222 + 200 + 21 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 59677015508100 + 60343206711921 = 7725090^2 + 7768089^2 .

It is not a de Polignac number, because 120020222220021 - 2³ = 120020222220013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120020222219976 and 120020222220003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120020222227021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 209005725 + ... + 209579181.

It is an arithmetic number, because the mean of its divisors is an integer number (7249245726801).

Almost surely, 2^{120020222220021} is an apocalyptic number.

It is an amenable number.

120020222220021 is a deficient number, since it is larger than the sum of its proper divisors (53961675223203).

120020222220021 is a wasteful number, since it uses less digits than its factorization.

120020222220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656501 (or 656498 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 120020222220021 its reverse (120022222020021), we get a palindrome (240042444240042).

The spelling of 120020222220021 in words is "one hundred twenty trillion, twenty billion, two hundred twenty-two million, two hundred twenty thousand, twenty-one".