102012002121251 has 2 divisors, whose sum is σ = 102012002121252. Its totient is φ = 102012002121250.

The previous prime is 102012002121223. The next prime is 102012002121307. The reversal of 102012002121251 is 152121200210201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102012002121251 - 2⁶ = 102012002121187 is a prime.

It is a super-2 number, since 2×102012002121251² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (102012002121451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51006001060625 + 51006001060626.

It is an arithmetic number, because the mean of its divisors is an integer number (51006001060626).

Almost surely, 2^{102012002121251} is an apocalyptic number.

102012002121251 is a deficient number, since it is larger than the sum of its proper divisors (1).

102012002121251 is an equidigital number, since it uses as much as digits as its factorization.

102012002121251 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 102012002121251 its reverse (152121200210201), we get a palindrome (254133202331452).

The spelling of 102012002121251 in words is "one hundred two trillion, twelve billion, two million, one hundred twenty-one thousand, two hundred fifty-one".