15212651213 has 4 divisors (see below), whose sum is σ = 15214082208. Its totient is φ = 15211220220.

The previous prime is 15212651197. The next prime is 15212651219. The reversal of 15212651213 is 31215621251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15212651213 - 2⁴ = 15212651197 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 (15212651219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 699431 + ... + 720852.

It is an arithmetic number, because the mean of its divisors is an integer number (3803520552).

Almost surely, 2^15212651213 is an apocalyptic number.

It is an amenable number.

15212651213 is a deficient number, since it is larger than the sum of its proper divisors (1430995).

15212651213 is a wasteful number, since it uses less digits than its factorization.

15212651213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1430994.

The product of its digits is 3600, while the sum is 29.

The spelling of 15212651213 in words is "fifteen billion, two hundred twelve million, six hundred fifty-one thousand, two hundred thirteen".