12231917380 has 24 divisors (see below), whose sum is σ = 26515641600. Its totient is φ = 4734935520.

The previous prime is 12231917371. The next prime is 12231917387. The reversal of 12231917380 is 8371913221.

It is a super-2 number, since 2×12231917380² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12231917387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9863830 + ... + 9865069.

It is an arithmetic number, because the mean of its divisors is an integer number (1104818400).

Almost surely, 2^12231917380 is an apocalyptic number.

12231917380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12231917380 is an abundant number, since it is smaller than the sum of its proper divisors (14283724220).

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

12231917380 is a wasteful number, since it uses less digits than its factorization.

12231917380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19728939 (or 19728937 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The spelling of 12231917380 in words is "twelve billion, two hundred thirty-one million, nine hundred seventeen thousand, three hundred eighty".