12211321384 has 16 divisors (see below), whose sum is σ = 23022728820. Its totient is φ = 6071927040.

The previous prime is 12211321379. The next prime is 12211321471. The reversal of 12211321384 is 48312311221.

It can be written as a sum of positive squares in 2 ways, for example, as 10672956100 + 1538365284 = 103310^2 + 39222^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4215169 + ... + 4218064.

Almost surely, 2^12211321384 is an apocalyptic number.

It is an amenable number.

12211321384 is a deficient number, since it is larger than the sum of its proper divisors (10811407436).

12211321384 is a wasteful number, since it uses less digits than its factorization.

12211321384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8433420 (or 8433416 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The spelling of 12211321384 in words is "twelve billion, two hundred eleven million, three hundred twenty-one thousand, three hundred eighty-four".