479900000111221 has 4 divisors (see below), whose sum is σ = 480271727455744. Its totient is φ = 479528272766700.

The previous prime is 479900000111219. The next prime is 479900000111227. The reversal of 479900000111221 is 122111000009974.

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 479900000111221 - 2¹ = 479900000111219 is a prime.

It is a super-2 number, since 2×479900000111221² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (479900000111227) 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, 185863670325 + ... + 185863672906.

It is an arithmetic number, because the mean of its divisors is an integer number (120067931863936).

Almost surely, 2^{479900000111221} is an apocalyptic number.

It is an amenable number.

479900000111221 is a deficient number, since it is larger than the sum of its proper divisors (371727344523).

479900000111221 is a wasteful number, since it uses less digits than its factorization.

479900000111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371727344522.

The product of its (nonzero) digits is 9072, while the sum is 37.

The spelling of 479900000111221 in words is "four hundred seventy-nine trillion, nine hundred billion, one hundred eleven thousand, two hundred twenty-one".