499122032221 has 4 divisors (see below), whose sum is σ = 499123513372. Its totient is φ = 499120551072.

The previous prime is 499122032209. The next prime is 499122032237. The reversal of 499122032221 is 122230221994.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 392771691225 + 106350340996 = 626715^2 + 326114^2 .

It is a cyclic number.

It is not a de Polignac number, because 499122032221 - 2⁷ = 499122032093 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 (499122032251) 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, 37135 + ... + 999811.

It is an arithmetic number, because the mean of its divisors is an integer number (124780878343).

Almost surely, 2^499122032221 is an apocalyptic number.

It is an amenable number.

499122032221 is a deficient number, since it is larger than the sum of its proper divisors (1481151).

499122032221 is an equidigital number, since it uses as much as digits as its factorization.

499122032221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481150.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 499122032221 in words is "four hundred ninety-nine billion, one hundred twenty-two million, thirty-two thousand, two hundred twenty-one".