20020022121 has 32 divisors (see below), whose sum is σ = 29314897920. Its totient is φ = 12052308800.

The previous prime is 20020022119. The next prime is 20020022147. The reversal of 20020022121 is 12122002002.

It is a cyclic number.

It is not a de Polignac number, because 20020022121 - 2¹ = 20020022119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20020022097 and 20020022106.

It is not an unprimeable number, because it can be changed into a prime (20020022101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9349711 + ... + 9351851.

It is an arithmetic number, because the mean of its divisors is an integer number (916090560).

Almost surely, 2^20020022121 is an apocalyptic number.

It is an amenable number.

20020022121 is a deficient number, since it is larger than the sum of its proper divisors (9294875799).

20020022121 is a wasteful number, since it uses less digits than its factorization.

20020022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3917.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20020022121 its reverse (12122002002), we get a palindrome (32142024123).

The spelling of 20020022121 in words is "twenty billion, twenty million, twenty-two thousand, one hundred twenty-one".