22101330101221 has 4 divisors (see below), whose sum is σ = 25258662972832. Its totient is φ = 18943997229612.

The previous prime is 22101330101219. The next prime is 22101330101287. The reversal of 22101330101221 is 12210103310122.

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 not a de Polignac number, because 22101330101221 - 2¹ = 22101330101219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22101330101621) 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, 1578666435795 + ... + 1578666435808.

It is an arithmetic number, because the mean of its divisors is an integer number (6314665743208).

Almost surely, 2^{22101330101221} is an apocalyptic number.

It is an amenable number.

22101330101221 is a deficient number, since it is larger than the sum of its proper divisors (3157332871611).

22101330101221 is an equidigital number, since it uses as much as digits as its factorization.

22101330101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3157332871610.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 22101330101221 its reverse (12210103310122), we get a palindrome (34311433411343).

The spelling of 22101330101221 in words is "twenty-two trillion, one hundred one billion, three hundred thirty million, one hundred one thousand, two hundred twenty-one".