21272600601 has 24 divisors (see below), whose sum is σ = 35122112064. Its totient is φ = 12153889440.

The previous prime is 21272600561. The next prime is 21272600623. The reversal of 21272600601 is 10600627212.

It is not a de Polignac number, because 21272600601 - 2⁶ = 21272600537 is a prime.

It is a super-2 number, since 2×21272600601² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21272600641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 453091 + ... + 497831.

It is an arithmetic number, because the mean of its divisors is an integer number (1463421336).

Almost surely, 2^21272600601 is an apocalyptic number.

21272600601 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21272600601 is a deficient number, since it is larger than the sum of its proper divisors (13849511463).

21272600601 is a wasteful number, since it uses less digits than its factorization.

21272600601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52301 (or 52298 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The spelling of 21272600601 in words is "twenty-one billion, two hundred seventy-two million, six hundred thousand, six hundred one".