249902020201 has 2 divisors, whose sum is σ = 249902020202. Its totient is φ = 249902020200.

The previous prime is 249902020183. The next prime is 249902020217. The reversal of 249902020201 is 102020209942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169217049600 + 80684970601 = 411360^2 + 284051^2 .

It is a cyclic number.

It is not a de Polignac number, because 249902020201 - 2¹¹ = 249902018153 is a prime.

It is not a weakly prime, because it can be changed into another prime (249902020601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124951010100 + 124951010101.

It is an arithmetic number, because the mean of its divisors is an integer number (124951010101).

Almost surely, 2^249902020201 is an apocalyptic number.

It is an amenable number.

249902020201 is a deficient number, since it is larger than the sum of its proper divisors (1).

249902020201 is an equidigital number, since it uses as much as digits as its factorization.

249902020201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 249902020201 in words is "two hundred forty-nine billion, nine hundred two million, twenty thousand, two hundred one".