211122210220931 has 2 divisors, whose sum is σ = 211122210220932. Its totient is φ = 211122210220930.

The previous prime is 211122210220927. The next prime is 211122210221023. The reversal of 211122210220931 is 139022012221112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211122210220931 - 2² = 211122210220927 is a prime.

It is a super-2 number, since 2×211122210220931² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211122210220894 and 211122210220903.

It is not a weakly prime, because it can be changed into another prime (211122210720931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105561105110465 + 105561105110466.

It is an arithmetic number, because the mean of its divisors is an integer number (105561105110466).

Almost surely, 2^{211122210220931} is an apocalyptic number.

211122210220931 is a deficient number, since it is larger than the sum of its proper divisors (1).

211122210220931 is an equidigital number, since it uses as much as digits as its factorization.

211122210220931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 211122210220931 in words is "two hundred eleven trillion, one hundred twenty-two billion, two hundred ten million, two hundred twenty thousand, nine hundred thirty-one".