22100101001001 has 24 divisors (see below), whose sum is σ = 33603031280000. Its totient is φ = 13957734830112.

The previous prime is 22100101000997. The next prime is 22100101001051. The reversal of 22100101001001 is 10010010100122.

It is a happy number.

It is not a de Polignac number, because 22100101001001 - 2² = 22100101000997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22100101001051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10008795 + ... + 12015663.

Almost surely, 2^{22100101001001} is an apocalyptic number.

It is an amenable number.

22100101001001 is a deficient number, since it is larger than the sum of its proper divisors (11502930278999).

22100101001001 is a wasteful number, since it uses less digits than its factorization.

22100101001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071293 (or 2071290 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 22100101001001 its reverse (10010010100122), we get a palindrome (32110111101123).

The spelling of 22100101001001 in words is "twenty-two trillion, one hundred billion, one hundred one million, one thousand, one".