202101021222131 has 2 divisors, whose sum is σ = 202101021222132. Its totient is φ = 202101021222130.

The previous prime is 202101021222103. The next prime is 202101021222193. The reversal of 202101021222131 is 131222120101202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202101021222131 - 2²² = 202101017027827 is a prime.

It is a super-2 number, since 2×202101021222131² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (202101021222431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101050510611065 + 101050510611066.

It is an arithmetic number, because the mean of its divisors is an integer number (101050510611066).

Almost surely, 2^{202101021222131} is an apocalyptic number.

202101021222131 is a deficient number, since it is larger than the sum of its proper divisors (1).

202101021222131 is an equidigital number, since it uses as much as digits as its factorization.

202101021222131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 202101021222131 its reverse (131222120101202), we get a palindrome (333323141323333).

The spelling of 202101021222131 in words is "two hundred two trillion, one hundred one billion, twenty-one million, two hundred twenty-two thousand, one hundred thirty-one".