12555021502 has 4 divisors (see below), whose sum is σ = 18832532256. Its totient is φ = 6277510750.

The previous prime is 12555021481. The next prime is 12555021511. The reversal of 12555021502 is 20512055521.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3138755374 + ... + 3138755377.

It is an arithmetic number, because the mean of its divisors is an integer number (4708133064).

Almost surely, 2^12555021502 is an apocalyptic number.

12555021502 is a deficient number, since it is larger than the sum of its proper divisors (6277510754).

12555021502 is an equidigital number, since it uses as much as digits as its factorization.

12555021502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6277510753.

The product of its (nonzero) digits is 5000, while the sum is 28.

The spelling of 12555021502 in words is "twelve billion, five hundred fifty-five million, twenty-one thousand, five hundred two".