21272027135 has 8 divisors (see below), whose sum is σ = 26636277600. Its totient is φ = 16277725024.

The previous prime is 21272027131. The next prime is 21272027141. The reversal of 21272027135 is 53172027212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21272027135 - 2² = 21272027131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21272027131) 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, 92486960 + ... + 92487189.

It is an arithmetic number, because the mean of its divisors is an integer number (3329534700).

Almost surely, 2^21272027135 is an apocalyptic number.

21272027135 is a deficient number, since it is larger than the sum of its proper divisors (5364250465).

21272027135 is a wasteful number, since it uses less digits than its factorization.

21272027135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184974177.

The product of its (nonzero) digits is 11760, while the sum is 32.

The spelling of 21272027135 in words is "twenty-one billion, two hundred seventy-two million, twenty-seven thousand, one hundred thirty-five".