214256339721 has 12 divisors (see below), whose sum is σ = 325769873520. Its totient is φ = 135319793400.

The previous prime is 214256339681. The next prime is 214256339747. The reversal of 214256339721 is 127933652412.

It is a happy number.

214256339721 is a `hidden beast` number, since 2 + 1 + 4 + 2 + 5 + 633 + 9 + 7 + 2 + 1 = 666.

It is not a de Polignac number, because 214256339721 - 2⁶ = 214256339657 is a prime.

It is a super-2 number, since 2×214256339721² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (214256339221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 626480355 + ... + 626480696.

It is an arithmetic number, because the mean of its divisors is an integer number (27147489460).

Almost surely, 2^214256339721 is an apocalyptic number.

It is an amenable number.

214256339721 is a deficient number, since it is larger than the sum of its proper divisors (111513533799).

214256339721 is a wasteful number, since it uses less digits than its factorization.

214256339721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252961076 (or 1252961073 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The spelling of 214256339721 in words is "two hundred fourteen billion, two hundred fifty-six million, three hundred thirty-nine thousand, seven hundred twenty-one".