46566122221 has 2 divisors, whose sum is σ = 46566122222. Its totient is φ = 46566122220.

The previous prime is 46566122177. The next prime is 46566122261. The reversal of 46566122221 is 12222166564.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43068700900 + 3497421321 = 207530^2 + 59139^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-46566122221 is a prime.

It is a super-2 number, since 2×46566122221² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (46566122261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23283061110 + 23283061111.

It is an arithmetic number, because the mean of its divisors is an integer number (23283061111).

Almost surely, 2^46566122221 is an apocalyptic number.

It is an amenable number.

46566122221 is a deficient number, since it is larger than the sum of its proper divisors (1).

46566122221 is an equidigital number, since it uses as much as digits as its factorization.

46566122221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 37.

Adding to 46566122221 its reverse (12222166564), we get a palindrome (58788288785).

The spelling of 46566122221 in words is "forty-six billion, five hundred sixty-six million, one hundred twenty-two thousand, two hundred twenty-one".