1296680424221 has 32 divisors (see below), whose sum is σ = 1601074513920. Its totient is φ = 1022632288704.

The previous prime is 1296680424161. The next prime is 1296680424239. The reversal of 1296680424221 is 1224240866921.

It is not a de Polignac number, because 1296680424221 - 2⁶ = 1296680424157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296680424271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42837590 + ... + 42867848.

It is an arithmetic number, because the mean of its divisors is an integer number (50033578560).

Almost surely, 2^{1296680424221} is an apocalyptic number.

It is an amenable number.

1296680424221 is a deficient number, since it is larger than the sum of its proper divisors (304394089699).

1296680424221 is a wasteful number, since it uses less digits than its factorization.

1296680424221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31785.

The product of its (nonzero) digits is 663552, while the sum is 47.

The spelling of 1296680424221 in words is "one trillion, two hundred ninety-six billion, six hundred eighty million, four hundred twenty-four thousand, two hundred twenty-one".