214562021 has 4 divisors (see below), whose sum is σ = 214604544. Its totient is φ = 214519500.

The previous prime is 214561987. The next prime is 214562053. The reversal of 214562021 is 120265412.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214562021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214562521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12485 + ... + 24186.

It is an arithmetic number, because the mean of its divisors is an integer number (53651136).

Almost surely, 2^214562021 is an apocalyptic number.

It is an amenable number.

214562021 is a deficient number, since it is larger than the sum of its proper divisors (42523).

214562021 is an equidigital number, since it uses as much as digits as its factorization.

214562021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42522.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 214562021 is about 14647.9357248726. The cubic root of 214562021 is about 598.6655723345.

The spelling of 214562021 in words is "two hundred fourteen million, five hundred sixty-two thousand, twenty-one".