201220120100249 has 2 divisors, whose sum is σ = 201220120100250. Its totient is φ = 201220120100248.

The previous prime is 201220120100159. The next prime is 201220120100317. The reversal of 201220120100249 is 942001021022102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136657689844624 + 64562430255625 = 11690068^2 + 8035075^2 .

It is a cyclic number.

It is not a de Polignac number, because 201220120100249 - 2⁸ = 201220120099993 is a prime.

It is not a weakly prime, because it can be changed into another prime (201220120100849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100610060050124 + 100610060050125.

It is an arithmetic number, because the mean of its divisors is an integer number (100610060050125).

Almost surely, 2^{201220120100249} is an apocalyptic number.

It is an amenable number.

201220120100249 is a deficient number, since it is larger than the sum of its proper divisors (1).

201220120100249 is an equidigital number, since it uses as much as digits as its factorization.

201220120100249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 201220120100249 in words is "two hundred one trillion, two hundred twenty billion, one hundred twenty million, one hundred thousand, two hundred forty-nine".