12210400365 has 32 divisors (see below), whose sum is σ = 20730733056. Its totient is φ = 6115845120.

The previous prime is 12210400351. The next prime is 12210400393. The reversal of 12210400365 is 56300401221.

It is not a de Polignac number, because 12210400365 - 2¹² = 12210396269 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66355 + ... + 169775.

It is an arithmetic number, because the mean of its divisors is an integer number (647835408).

Almost surely, 2^12210400365 is an apocalyptic number.

12210400365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12210400365 is a deficient number, since it is larger than the sum of its proper divisors (8520332691).

12210400365 is a wasteful number, since it uses less digits than its factorization.

12210400365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103909.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 12210400365 its reverse (56300401221), we get a palindrome (68510801586).

The spelling of 12210400365 in words is "twelve billion, two hundred ten million, four hundred thousand, three hundred sixty-five".