21270623301 has 48 divisors (see below), whose sum is σ = 33191371200. Its totient is φ = 13458529728.

The previous prime is 21270623299. The next prime is 21270623347. The reversal of 21270623301 is 10332607212.

21270623301 is a `hidden beast` number, since 2 + 1 + 2 + 7 + 0 + 623 + 30 + 1 = 666.

It is not a de Polignac number, because 21270623301 - 2¹ = 21270623299 is a prime.

It is a super-2 number, since 2×21270623301² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21270663301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1331775 + ... + 1347651.

It is an arithmetic number, because the mean of its divisors is an integer number (691486900).

Almost surely, 2^21270623301 is an apocalyptic number.

It is an amenable number.

21270623301 is a deficient number, since it is larger than the sum of its proper divisors (11920747899).

21270623301 is a wasteful number, since it uses less digits than its factorization.

21270623301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16003 (or 15968 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The spelling of 21270623301 in words is "twenty-one billion, two hundred seventy million, six hundred twenty-three thousand, three hundred one".