221112221302 has 16 divisors (see below), whose sum is σ = 379976303520. Its totient is φ = 94530685248.

The previous prime is 221112221299. The next prime is 221112221303. The reversal of 221112221302 is 203122211122.

It is a super-2 number, since 2×221112221302² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221112221302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221112221303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19302013 + ... + 19313464.

It is an arithmetic number, because the mean of its divisors is an integer number (23748518970).

Almost surely, 2^221112221302 is an apocalyptic number.

221112221302 is a deficient number, since it is larger than the sum of its proper divisors (158864082218).

221112221302 is a wasteful number, since it uses less digits than its factorization.

221112221302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38615895.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 221112221302 its reverse (203122211122), we get a palindrome (424234432424).

The spelling of 221112221302 in words is "two hundred twenty-one billion, one hundred twelve million, two hundred twenty-one thousand, three hundred two".