2214921 has 8 divisors (see below), whose sum is σ = 2971584. Its totient is φ = 1467440.

The previous prime is 2214911. The next prime is 2214929. The reversal of 2214921 is 1294122.

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 2214921 - 2¹⁷ = 2083849 is a prime.

2214921 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2214929) 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, 1710 + ... + 2711.

It is an arithmetic number, because the mean of its divisors is an integer number (371448).

2^2214921 is an apocalyptic number.

It is an amenable number.

2214921 is a deficient number, since it is larger than the sum of its proper divisors (756663).

2214921 is a wasteful number, since it uses less digits than its factorization.

2214921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4591.

The product of its digits is 288, while the sum is 21.

The square root of 2214921 is about 1488.2610658080. The cubic root of 2214921 is about 130.3525146397.

The spelling of 2214921 in words is "two million, two hundred fourteen thousand, nine hundred twenty-one".