221222132013 has 16 divisors (see below), whose sum is σ = 312860598336. Its totient is φ = 138562932480.

The previous prime is 221222132011. The next prime is 221222132051. The reversal of 221222132013 is 310231222122.

It is not a de Polignac number, because 221222132013 - 2¹ = 221222132011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221222132011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3769206 + ... + 3827447.

It is an arithmetic number, because the mean of its divisors is an integer number (19553787396).

Almost surely, 2^221222132013 is an apocalyptic number.

It is an amenable number.

221222132013 is a deficient number, since it is larger than the sum of its proper divisors (91638466323).

221222132013 is a wasteful number, since it uses less digits than its factorization.

221222132013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7597244.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 221222132013 its reverse (310231222122), we get a palindrome (531453354135).

The spelling of 221222132013 in words is "two hundred twenty-one billion, two hundred twenty-two million, one hundred thirty-two thousand, thirteen".