22013101221 has 16 divisors (see below), whose sum is σ = 29710752960. Its totient is φ = 14495500800.

The previous prime is 22013101217. The next prime is 22013101223. The reversal of 22013101221 is 12210131022.

It is not a de Polignac number, because 22013101221 - 2² = 22013101217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22013101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22013101223) 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, 2218371 + ... + 2228271.

It is an arithmetic number, because the mean of its divisors is an integer number (1856922060).

Almost surely, 2^22013101221 is an apocalyptic number.

It is an amenable number.

22013101221 is a deficient number, since it is larger than the sum of its proper divisors (7697651739).

22013101221 is an equidigital number, since it uses as much as digits as its factorization.

22013101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18916.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 22013101221 its reverse (12210131022), we get a palindrome (34223232243).

The spelling of 22013101221 in words is "twenty-two billion, thirteen million, one hundred one thousand, two hundred twenty-one".