22111022101001 has 4 divisors (see below), whose sum is σ = 22329943112004. Its totient is φ = 21892101090000.

The previous prime is 22111022100961. The next prime is 22111022101033. The reversal of 22111022101001 is 10010122011122.

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 18175718363401 + 3935303737600 = 4263299^2 + 1983760^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22111022101001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22111027101001) 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, 109460505350 + ... + 109460505551.

It is an arithmetic number, because the mean of its divisors is an integer number (5582485778001).

Almost surely, 2^{22111022101001} is an apocalyptic number.

It is an amenable number.

22111022101001 is a deficient number, since it is larger than the sum of its proper divisors (218921011003).

22111022101001 is a wasteful number, since it uses less digits than its factorization.

22111022101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218921011002.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 22111022101001 its reverse (10010122011122), we get a palindrome (32121144112123).

The spelling of 22111022101001 in words is "twenty-two trillion, one hundred eleven billion, twenty-two million, one hundred one thousand, one".