12320011400 has 48 divisors (see below), whose sum is σ = 29113629540. Its totient is φ = 4847212800.

The previous prime is 12320011393. The next prime is 12320011409. The reversal of 12320011400 is 411002321.

It can be written as a sum of positive squares in 6 ways, for example, as 1781346436 + 10538664964 = 42206^2 + 102658^2 .

It is a super-2 number, since 2×12320011400² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12320011409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 492719 + ... + 517118.

Almost surely, 2^12320011400 is an apocalyptic number.

12320011400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12320011400 is an abundant number, since it is smaller than the sum of its proper divisors (16793618140).

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

12320011400 is a wasteful number, since it uses less digits than its factorization.

12320011400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009914 (or 1009905 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12320011400 its reverse (411002321), we get a palindrome (12731013721).

The spelling of 12320011400 in words is "twelve billion, three hundred twenty million, eleven thousand, four hundred".