202001311101251 has 2 divisors, whose sum is σ = 202001311101252. Its totient is φ = 202001311101250.

The previous prime is 202001311101229. The next prime is 202001311101307. The reversal of 202001311101251 is 152101113100202.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202001311101251 is a prime.

It is not a weakly prime, because it can be changed into another prime (202001311101221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101000655550625 + 101000655550626.

It is an arithmetic number, because the mean of its divisors is an integer number (101000655550626).

Almost surely, 2^{202001311101251} is an apocalyptic number.

202001311101251 is a deficient number, since it is larger than the sum of its proper divisors (1).

202001311101251 is an equidigital number, since it uses as much as digits as its factorization.

202001311101251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 20.

Adding to 202001311101251 its reverse (152101113100202), we get a palindrome (354102424201453).

The spelling of 202001311101251 in words is "two hundred two trillion, one billion, three hundred eleven million, one hundred one thousand, two hundred fifty-one".