21227595875052 has 72 divisors (see below), whose sum is σ = 57712683377664. Its totient is φ = 6055035483168.

The previous prime is 21227595875039. The next prime is 21227595875081. The reversal of 21227595875052 is 25057859572212.

It is a super-2 number, since 2×21227595875052² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29380608 + ... + 30094439.

It is an arithmetic number, because the mean of its divisors is an integer number (801565046912).

Almost surely, 2^{21227595875052} is an apocalyptic number.

It is an amenable number.

21227595875052 is an abundant number, since it is smaller than the sum of its proper divisors (36485087502612).

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

21227595875052 is a wasteful number, since it uses less digits than its factorization.

21227595875052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59475675 (or 59475666 counting only the distinct ones).

The product of its (nonzero) digits is 35280000, while the sum is 60.

The spelling of 21227595875052 in words is "twenty-one trillion, two hundred twenty-seven billion, five hundred ninety-five million, eight hundred seventy-five thousand, fifty-two".