214455021 has 16 divisors (see below), whose sum is σ = 312181248. Its totient is φ = 129870000.

The previous prime is 214455011. The next prime is 214455041. The reversal of 214455021 is 120554412.

214455021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 214455021 - 2⁷ = 214454893 is a prime.

It is a super-2 number, since 2×214455021² = 91981912064220882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 214454982 and 214455000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214455011) 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, 72840 + ... + 75726.

It is an arithmetic number, because the mean of its divisors is an integer number (19511328).

Almost surely, 2^214455021 is an apocalyptic number.

It is an amenable number.

214455021 is a deficient number, since it is larger than the sum of its proper divisors (97726227).

214455021 is a wasteful number, since it uses less digits than its factorization.

214455021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5152.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 214455021 is about 14644.2828776284. The cubic root of 214455021 is about 598.5660395481.

The spelling of 214455021 in words is "two hundred fourteen million, four hundred fifty-five thousand, twenty-one".