12102121951 has 2 divisors, whose sum is σ = 12102121952. Its totient is φ = 12102121950.

The previous prime is 12102121937. The next prime is 12102121963. The reversal of 12102121951 is 15912120121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12102121951 - 2²¹ = 12100024799 is a prime.

It is a super-2 number, since 2×12102121951² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12102122951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051060975 + 6051060976.

It is an arithmetic number, because the mean of its divisors is an integer number (6051060976).

Almost surely, 2^12102121951 is an apocalyptic number.

12102121951 is a deficient number, since it is larger than the sum of its proper divisors (1).

12102121951 is an equidigital number, since it uses as much as digits as its factorization.

12102121951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 25.

The spelling of 12102121951 in words is "twelve billion, one hundred two million, one hundred twenty-one thousand, nine hundred fifty-one".