12501770421 has 16 divisors (see below), whose sum is σ = 19493348864. Its totient is φ = 6977731824.

The previous prime is 12501770401. The next prime is 12501770429. The reversal of 12501770421 is 12407710521.

12501770421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12501770421 - 2⁹ = 12501769909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12501770429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6921451 + ... + 6923256.

It is an arithmetic number, because the mean of its divisors is an integer number (1218334304).

Almost surely, 2^12501770421 is an apocalyptic number.

It is an amenable number.

12501770421 is a deficient number, since it is larger than the sum of its proper divisors (6991578443).

12501770421 is a wasteful number, since it uses less digits than its factorization.

12501770421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13844760.

The product of its (nonzero) digits is 3920, while the sum is 30.

The spelling of 12501770421 in words is "twelve billion, five hundred one million, seven hundred seventy thousand, four hundred twenty-one".