202220022121 has 16 divisors (see below), whose sum is σ = 230987211840. Its totient is φ = 175490228160.

The previous prime is 202220022113. The next prime is 202220022127. The reversal of 202220022121 is 121220022202.

It is not a de Polignac number, because 202220022121 - 2³ = 202220022113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202220022095 and 202220022104.

It is not an unprimeable number, because it can be changed into a prime (202220022127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3092470 + ... + 3157183.

It is an arithmetic number, because the mean of its divisors is an integer number (14436700740).

Almost surely, 2^202220022121 is an apocalyptic number.

It is an amenable number.

202220022121 is a deficient number, since it is larger than the sum of its proper divisors (28767189719).

202220022121 is a wasteful number, since it uses less digits than its factorization.

202220022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6249816.

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

Adding to 202220022121 its reverse (121220022202), we get a palindrome (323440044323).

The spelling of 202220022121 in words is "two hundred two billion, two hundred twenty million, twenty-two thousand, one hundred twenty-one".