201202110021251 has 2 divisors, whose sum is σ = 201202110021252. Its totient is φ = 201202110021250.

The previous prime is 201202110021113. The next prime is 201202110021271. The reversal of 201202110021251 is 152120011202102.

It is an a-pointer prime, because the next prime (201202110021271) can be obtained adding 201202110021251 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201202110021251 - 2¹⁸ = 201202109759107 is a prime.

It is not a weakly prime, because it can be changed into another prime (201202110021271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100601055010625 + 100601055010626.

It is an arithmetic number, because the mean of its divisors is an integer number (100601055010626).

Almost surely, 2^{201202110021251} is an apocalyptic number.

201202110021251 is a deficient number, since it is larger than the sum of its proper divisors (1).

201202110021251 is an equidigital number, since it uses as much as digits as its factorization.

201202110021251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 20.

Adding to 201202110021251 its reverse (152120011202102), we get a palindrome (353322121223353).

The spelling of 201202110021251 in words is "two hundred one trillion, two hundred two billion, one hundred ten million, twenty-one thousand, two hundred fifty-one".