12120438399364 has 9 divisors (see below), whose sum is σ = 21210779383941. Its totient is φ = 6060215718240.

The previous prime is 12120438399353. The next prime is 12120438399379. The reversal of 12120438399364 is 46399383402121.

It is a happy number.

The square root of 12120438399364 is 3481442.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1728325656964 + 10392112742400 = 1314658^2 + 3223680^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 6092524 + ... + 7833244.

Almost surely, 2^{12120438399364} is an apocalyptic number.

12120438399364 is the 3481442-nd square number.

It is an amenable number.

12120438399364 is a deficient number, since it is larger than the sum of its proper divisors (9090340984577).

12120438399364 is an frugal number, since it uses more digits than its factorization.

12120438399364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3481446 (or 1740723 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 55.

The spelling of 12120438399364 in words is "twelve trillion, one hundred twenty billion, four hundred thirty-eight million, three hundred ninety-nine thousand, three hundred sixty-four".