12271077940 has 24 divisors (see below), whose sum is σ = 28111924512. Its totient is φ = 4462210080.

The previous prime is 12271077899. The next prime is 12271077941. The reversal of 12271077940 is 4977017221.

It is a junction number, because it is equal to n+sod(n) for n = 12271077893 and 12271077902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12271077941) 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, 27888594 + ... + 27889033.

It is an arithmetic number, because the mean of its divisors is an integer number (1171330188).

Almost surely, 2^12271077940 is an apocalyptic number.

12271077940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12271077940 is an abundant number, since it is smaller than the sum of its proper divisors (15840846572).

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

12271077940 is a wasteful number, since it uses less digits than its factorization.

12271077940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55777647 (or 55777645 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 40.

The spelling of 12271077940 in words is "twelve billion, two hundred seventy-one million, seventy-seven thousand, nine hundred forty".