21127132060 has 12 divisors (see below), whose sum is σ = 44366977368. Its totient is φ = 8450852816.

The previous prime is 21127132051. The next prime is 21127132063. The reversal of 21127132060 is 6023172112.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21127132063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528178282 + ... + 528178321.

It is an arithmetic number, because the mean of its divisors is an integer number (3697248114).

Almost surely, 2^21127132060 is an apocalyptic number.

21127132060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21127132060 is an abundant number, since it is smaller than the sum of its proper divisors (23239845308).

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

21127132060 is a wasteful number, since it uses less digits than its factorization.

21127132060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056356612 (or 1056356610 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The spelling of 21127132060 in words is "twenty-one billion, one hundred twenty-seven million, one hundred thirty-two thousand, sixty".