20202122211121 has 16 divisors (see below), whose sum is σ = 21565878998400. Its totient is φ = 18868438512000.

The previous prime is 20202122211097. The next prime is 20202122211133. The reversal of 20202122211121 is 12111222120202.

It is a cyclic number.

It is not a de Polignac number, because 20202122211121 - 2⁹ = 20202122210609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20202122211721) 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, 30566485 + ... + 31220413.

It is an arithmetic number, because the mean of its divisors is an integer number (1347867437400).

Almost surely, 2^{20202122211121} is an apocalyptic number.

It is an amenable number.

20202122211121 is a deficient number, since it is larger than the sum of its proper divisors (1363756787279).

20202122211121 is a wasteful number, since it uses less digits than its factorization.

20202122211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676920.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 20202122211121 its reverse (12111222120202), we get a palindrome (32313344331323).

The spelling of 20202122211121 in words is "twenty trillion, two hundred two billion, one hundred twenty-two million, two hundred eleven thousand, one hundred twenty-one".