214622021 has 8 divisors (see below), whose sum is σ = 221733888. Its totient is φ = 207522000.

The previous prime is 214621969. The next prime is 214622029. The reversal of 214622021 is 120226412.

It is a happy number.

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 214622021 - 2¹⁸ = 214359877 is a prime.

It is a super-2 number, since 2×214622021² = 92125223796248882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 214621984 and 214622002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214622029) 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, 48116 + ... + 52386.

It is an arithmetic number, because the mean of its divisors is an integer number (27716736).

Almost surely, 2^214622021 is an apocalyptic number.

It is an amenable number.

214622021 is a deficient number, since it is larger than the sum of its proper divisors (7111867).

214622021 is a wasteful number, since it uses less digits than its factorization.

214622021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5923.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 214622021 is about 14649.9836518680. The cubic root of 214622021 is about 598.7213706323.

Adding to 214622021 its reverse (120226412), we get a palindrome (334848433).

The spelling of 214622021 in words is "two hundred fourteen million, six hundred twenty-two thousand, twenty-one".