221222402013 has 16 divisors (see below), whose sum is σ = 296373052800. Its totient is φ = 146778355200.

The previous prime is 221222401997. The next prime is 221222402017. The reversal of 221222402013 is 310204222122.

It is not a de Polignac number, because 221222402013 - 2⁴ = 221222401997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221222402017) 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 15 ways as a sum of consecutive naturals, for example, 318673 + ... + 737561.

It is an arithmetic number, because the mean of its divisors is an integer number (18523315800).

Almost surely, 2^221222402013 is an apocalyptic number.

It is an amenable number.

221222402013 is a deficient number, since it is larger than the sum of its proper divisors (75150650787).

221222402013 is a wasteful number, since it uses less digits than its factorization.

221222402013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419732.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 221222402013 its reverse (310204222122), we get a palindrome (531426624135).

The spelling of 221222402013 in words is "two hundred twenty-one billion, two hundred twenty-two million, four hundred two thousand, thirteen".