12920951 has 2 divisors, whose sum is σ = 12920952. Its totient is φ = 12920950.

The previous prime is 12920933. The next prime is 12920977. The reversal of 12920951 is 15902921.

12920951 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12920951 - 2¹⁰ = 12919927 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12926951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6460475 + 6460476.

It is an arithmetic number, because the mean of its divisors is an integer number (6460476).

Almost surely, 2^12920951 is an apocalyptic number.

12920951 is a deficient number, since it is larger than the sum of its proper divisors (1).

12920951 is an equidigital number, since it uses as much as digits as its factorization.

12920951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 12920951 is about 3594.5724363267. The cubic root of 12920951 is about 234.6559080686.

The spelling of 12920951 in words is "twelve million, nine hundred twenty thousand, nine hundred fifty-one".