212333100109961 has 2 divisors, whose sum is σ = 212333100109962. Its totient is φ = 212333100109960.

The previous prime is 212333100109913. The next prime is 212333100110003. The reversal of 212333100109961 is 169901001333212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177252876913225 + 35080223196736 = 13313635^2 + 5922856^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212333100109961 is a prime.

It is a super-3 number, since 3×212333100109961³ (a number of 44 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (212333100109261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106166550054980 + 106166550054981.

It is an arithmetic number, because the mean of its divisors is an integer number (106166550054981).

Almost surely, 2^{212333100109961} is an apocalyptic number.

It is an amenable number.

212333100109961 is a deficient number, since it is larger than the sum of its proper divisors (1).

212333100109961 is an equidigital number, since it uses as much as digits as its factorization.

212333100109961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 41.

The spelling of 212333100109961 in words is "two hundred twelve trillion, three hundred thirty-three billion, one hundred million, one hundred nine thousand, nine hundred sixty-one".