22011322121 has 4 divisors (see below), whose sum is σ = 22013858832. Its totient is φ = 22008785412.

The previous prime is 22011322079. The next prime is 22011322127. The reversal of 22011322121 is 12122311022.

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 a cyclic number.

It is not a de Polignac number, because 22011322121 - 2¹⁴ = 22011305737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22011322121.

It is not an unprimeable number, because it can be changed into a prime (22011322127) 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, 1255295 + ... + 1272708.

It is an arithmetic number, because the mean of its divisors is an integer number (5503464708).

Almost surely, 2^22011322121 is an apocalyptic number.

It is an amenable number.

22011322121 is a deficient number, since it is larger than the sum of its proper divisors (2536711).

22011322121 is an equidigital number, since it uses as much as digits as its factorization.

22011322121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2536710.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 22011322121 its reverse (12122311022), we get a palindrome (34133633143).

The spelling of 22011322121 in words is "twenty-two billion, eleven million, three hundred twenty-two thousand, one hundred twenty-one".