213011111933 has 2 divisors, whose sum is σ = 213011111934. Its totient is φ = 213011111932.

The previous prime is 213011111917. The next prime is 213011112001. The reversal of 213011111933 is 339111110312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212449090084 + 562021849 = 460922^2 + 23707^2 .

It is a cyclic number.

It is not a de Polignac number, because 213011111933 - 2⁴ = 213011111917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213011111233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106505555966 + 106505555967.

It is an arithmetic number, because the mean of its divisors is an integer number (106505555967).

Almost surely, 2^213011111933 is an apocalyptic number.

It is an amenable number.

213011111933 is a deficient number, since it is larger than the sum of its proper divisors (1).

213011111933 is an equidigital number, since it uses as much as digits as its factorization.

213011111933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 26.

The spelling of 213011111933 in words is "two hundred thirteen billion, eleven million, one hundred eleven thousand, nine hundred thirty-three".