12022551813 has 4 divisors (see below), whose sum is σ = 16030069088. Its totient is φ = 8015034540.

The previous prime is 12022551809. The next prime is 12022551817. The reversal of 12022551813 is 31815522021.

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 an interprime number because it is at equal distance from previous prime (12022551809) and next prime (12022551817).

It is not a de Polignac number, because 12022551813 - 2² = 12022551809 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 (12022551817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2003758633 + ... + 2003758638.

It is an arithmetic number, because the mean of its divisors is an integer number (4007517272).

Almost surely, 2^12022551813 is an apocalyptic number.

It is an amenable number.

12022551813 is a deficient number, since it is larger than the sum of its proper divisors (4007517275).

12022551813 is an equidigital number, since it uses as much as digits as its factorization.

12022551813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4007517274.

The product of its (nonzero) digits is 4800, while the sum is 30.

The spelling of 12022551813 in words is "twelve billion, twenty-two million, five hundred fifty-one thousand, eight hundred thirteen".