22011111021121 has 16 divisors (see below), whose sum is σ = 22835054850048. Its totient is φ = 21194387064000.

The previous prime is 22011111021073. The next prime is 22011111021203. The reversal of 22011111021121 is 12112011111022.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22011111021121 is a prime.

It is a super-2 number, since 2×22011111021121² (a number of 27 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 = 22011111021095 and 22011111021104.

It is not an unprimeable number, because it can be changed into a prime (22011111021821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12304155 + ... + 13979071.

It is an arithmetic number, because the mean of its divisors is an integer number (1427190928128).

Almost surely, 2^{22011111021121} is an apocalyptic number.

It is an amenable number.

22011111021121 is a deficient number, since it is larger than the sum of its proper divisors (823943828927).

22011111021121 is a wasteful number, since it uses less digits than its factorization.

22011111021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1677072.

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

Adding to 22011111021121 its reverse (12112011111022), we get a palindrome (34123122132143).

The spelling of 22011111021121 in words is "twenty-two trillion, eleven billion, one hundred eleven million, twenty-one thousand, one hundred twenty-one".