20222022121 has 12 divisors (see below), whose sum is σ = 24907317588. Its totient is φ = 16313563392.

The previous prime is 20222022113. The next prime is 20222022131. The reversal of 20222022121 is 12122022202.

It can be written as a sum of positive squares in 2 ways, for example, as 16724955625 + 3497066496 = 129325^2 + 59136^2 .

It is not a de Polignac number, because 20222022121 - 2³ = 20222022113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20222022095 and 20222022104.

It is not an unprimeable number, because it can be changed into a prime (20222022101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12137236 + ... + 12138901.

It is an arithmetic number, because the mean of its divisors is an integer number (2075609799).

Almost surely, 2^20222022121 is an apocalyptic number.

It is an amenable number.

20222022121 is a deficient number, since it is larger than the sum of its proper divisors (4685295467).

20222022121 is a wasteful number, since it uses less digits than its factorization.

20222022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24276168 (or 24276161 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20222022121 its reverse (12122022202), we get a palindrome (32344044323).

The spelling of 20222022121 in words is "twenty billion, two hundred twenty-two million, twenty-two thousand, one hundred twenty-one".