212011201931 has 2 divisors, whose sum is σ = 212011201932. Its totient is φ = 212011201930.

The previous prime is 212011201901. The next prime is 212011201933. The reversal of 212011201931 is 139102110212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212011201931 is a prime.

It is a super-2 number, since 2×212011201931² (a number of 23 digits) contains 22 as substring.

Together with 212011201933, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 212011201897 and 212011201906.

It is not a weakly prime, because it can be changed into another prime (212011201933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106005600965 + 106005600966.

It is an arithmetic number, because the mean of its divisors is an integer number (106005600966).

Almost surely, 2^212011201931 is an apocalyptic number.

212011201931 is a deficient number, since it is larger than the sum of its proper divisors (1).

212011201931 is an equidigital number, since it uses as much as digits as its factorization.

212011201931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 212011201931 in words is "two hundred twelve billion, eleven million, two hundred one thousand, nine hundred thirty-one".