22111302121 has 4 divisors (see below), whose sum is σ = 22113349200. Its totient is φ = 22109255044.

The previous prime is 22111302113. The next prime is 22111302137. The reversal of 22111302121 is 12120311122.

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 22111302121 - 2³ = 22111302113 is a prime.

It is a super-2 number, since 2×22111302121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22111302095 and 22111302104.

It is not an unprimeable number, because it can be changed into a prime (22111302151) 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, 1007251 + ... + 1028968.

It is an arithmetic number, because the mean of its divisors is an integer number (5528337300).

Almost surely, 2^22111302121 is an apocalyptic number.

It is an amenable number.

22111302121 is a deficient number, since it is larger than the sum of its proper divisors (2047079).

22111302121 is a wasteful number, since it uses less digits than its factorization.

22111302121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2047078.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 22111302121 its reverse (12120311122), we get a palindrome (34231613243).

Subtracting from 22111302121 its reverse (12120311122), we obtain a palindrome (9990990999).

The spelling of 22111302121 in words is "twenty-two billion, one hundred eleven million, three hundred two thousand, one hundred twenty-one".