214022721 has 16 divisors (see below), whose sum is σ = 315060480. Its totient is φ = 128146320.

The previous prime is 214022681. The next prime is 214022777. The reversal of 214022721 is 127220412.

It is not a de Polignac number, because 214022721 - 2⁹ = 214022209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (214029721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36331 + ... + 41808.

It is an arithmetic number, because the mean of its divisors is an integer number (19691280).

Almost surely, 2^214022721 is an apocalyptic number.

It is an amenable number.

214022721 is a deficient number, since it is larger than the sum of its proper divisors (101037759).

214022721 is a wasteful number, since it uses less digits than its factorization.

214022721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78236.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 214022721 is about 14629.5154055081. The cubic root of 214022721 is about 598.1635710602.

The spelling of 214022721 in words is "two hundred fourteen million, twenty-two thousand, seven hundred twenty-one".