45214352221 has 4 divisors (see below), whose sum is σ = 46672879744. Its totient is φ = 43755824700.

The previous prime is 45214352219. The next prime is 45214352257. The reversal of 45214352221 is 12225341254.

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 not a de Polignac number, because 45214352221 - 2¹ = 45214352219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 1458527491 = 45214352221 / (4 + 5 + 2 + 1 + 4 + 3 + 5 + 2 + 2 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45214352291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 729263715 + ... + 729263776.

It is an arithmetic number, because the mean of its divisors is an integer number (11668219936).

Almost surely, 2^45214352221 is an apocalyptic number.

It is an amenable number.

45214352221 is a deficient number, since it is larger than the sum of its proper divisors (1458527523).

45214352221 is a wasteful number, since it uses less digits than its factorization.

45214352221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458527522.

The product of its digits is 19200, while the sum is 31.

Adding to 45214352221 its reverse (12225341254), we get a palindrome (57439693475).

The spelling of 45214352221 in words is "forty-five billion, two hundred fourteen million, three hundred fifty-two thousand, two hundred twenty-one".