22111100121101 has 4 divisors (see below), whose sum is σ = 22112522895804. Its totient is φ = 22109677346400.

The previous prime is 22111100121079. The next prime is 22111100121137. The reversal of 22111100121101 is 10112100111122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14056118224201 + 8054981896900 = 3749149^2 + 2838130^2 .

It is a cyclic number.

It is not a de Polignac number, because 22111100121101 - 2³⁴ = 22093920251917 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 (22111100121181) 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, 711364040 + ... + 711395121.

It is an arithmetic number, because the mean of its divisors is an integer number (5528130723951).

Almost surely, 2^{22111100121101} is an apocalyptic number.

It is an amenable number.

22111100121101 is a deficient number, since it is larger than the sum of its proper divisors (1422774703).

22111100121101 is a wasteful number, since it uses less digits than its factorization.

22111100121101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422774702.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 22111100121101 its reverse (10112100111122), we get a palindrome (32223200232223).

The spelling of 22111100121101 in words is "twenty-two trillion, one hundred eleven billion, one hundred million, one hundred twenty-one thousand, one hundred one".