202122122211 has 48 divisors (see below), whose sum is σ = 307572572736. Its totient is φ = 127653808128.

The previous prime is 202122122201. The next prime is 202122122221. The reversal of 202122122211 is 112221221202.

It is a happy number.

202122122211 is a `hidden beast` number, since 20 + 212 + 212 + 221 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (202122122201) and next prime (202122122221).

It is not a de Polignac number, because 202122122211 - 2¹⁷ = 202121991139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (202122122201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44744725 + ... + 44749241.

It is an arithmetic number, because the mean of its divisors is an integer number (6407761932).

Almost surely, 2^202122122211 is an apocalyptic number.

202122122211 is a deficient number, since it is larger than the sum of its proper divisors (105450450525).

202122122211 is a wasteful number, since it uses less digits than its factorization.

202122122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6572 (or 6569 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 202122122211 its reverse (112221221202), we get a palindrome (314343343413).

The spelling of 202122122211 in words is "two hundred two billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred eleven".