212201685449401 has 2 divisors, whose sum is σ = 212201685449402. Its totient is φ = 212201685449400.

The previous prime is 212201685449387. The next prime is 212201685449431. The reversal of 212201685449401 is 104944586102212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200263112559225 + 11938572890176 = 14151435^2 + 3455224^2 .

It is a cyclic number.

It is not a de Polignac number, because 212201685449401 - 2²⁷ = 212201551231673 is a prime.

It is not a weakly prime, because it can be changed into another prime (212201685449431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106100842724700 + 106100842724701.

It is an arithmetic number, because the mean of its divisors is an integer number (106100842724701).

Almost surely, 2^{212201685449401} is an apocalyptic number.

It is an amenable number.

212201685449401 is a deficient number, since it is larger than the sum of its proper divisors (1).

212201685449401 is an equidigital number, since it uses as much as digits as its factorization.

212201685449401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1105920, while the sum is 49.

The spelling of 212201685449401 in words is "two hundred twelve trillion, two hundred one billion, six hundred eighty-five million, four hundred forty-nine thousand, four hundred one".