123212400366 has 32 divisors (see below), whose sum is σ = 268841865600. Its totient is φ = 37335034080.

The previous prime is 123212400359. The next prime is 123212400379. The reversal of 123212400366 is 663004212321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1513920 + ... + 1593228.

It is an arithmetic number, because the mean of its divisors is an integer number (8401308300).

Almost surely, 2^123212400366 is an apocalyptic number.

123212400366 is an abundant number, since it is smaller than the sum of its proper divisors (145629465234).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123212400366 is a wasteful number, since it uses less digits than its factorization.

123212400366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102864.

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 123212400366 its reverse (663004212321), we get a palindrome (786216612687).

The spelling of 123212400366 in words is "one hundred twenty-three billion, two hundred twelve million, four hundred thousand, three hundred sixty-six".