2214521999 has 4 divisors (see below), whose sum is σ = 2214690936. Its totient is φ = 2214353064.

The previous prime is 2214521963. The next prime is 2214522031. The reversal of 2214521999 is 9991254122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2214521999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2214521599) 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, 62984 + ... + 91629.

It is an arithmetic number, because the mean of its divisors is an integer number (553672734).

Almost surely, 2^2214521999 is an apocalyptic number.

2214521999 is a deficient number, since it is larger than the sum of its proper divisors (168937).

2214521999 is a wasteful number, since it uses less digits than its factorization.

2214521999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168936.

The product of its digits is 116640, while the sum is 44.

The square root of 2214521999 is about 47058.7080039391. The cubic root of 2214521999 is about 1303.4468683496.

It can be divided in two parts, 22145 and 21999, that added together give a palindrome (44144).

The spelling of 2214521999 in words is "two billion, two hundred fourteen million, five hundred twenty-one thousand, nine hundred ninety-nine".