4657122221 has 8 divisors (see below), whose sum is σ = 4705025400. Its totient is φ = 4609254400.

The previous prime is 4657122203. The next prime is 4657122257. The reversal of 4657122221 is 1222217564.

It can be written as a sum of positive squares in 4 ways, for example, as 2257200100 + 2399922121 = 47510^2 + 48989^2 .

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 4657122221 - 2¹⁰ = 4657121197 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 (4657122121) 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, 316925 + ... + 331293.

It is an arithmetic number, because the mean of its divisors is an integer number (588128175).

Almost surely, 2^4657122221 is an apocalyptic number.

It is an amenable number.

4657122221 is a deficient number, since it is larger than the sum of its proper divisors (47903179).

4657122221 is a wasteful number, since it uses less digits than its factorization.

4657122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17679.

The product of its digits is 13440, while the sum is 32.

The square root of 4657122221 is about 68243.1111614938. Note that the first 4 decimals coincide. The cubic root of 4657122221 is about 1669.9592686111.

Adding to 4657122221 its reverse (1222217564), we get a palindrome (5879339785).

The spelling of 4657122221 in words is "four billion, six hundred fifty-seven million, one hundred twenty-two thousand, two hundred twenty-one".