22101011001 has 8 divisors (see below), whose sum is σ = 32742238560. Its totient is φ = 14734007316.

The previous prime is 22101010999. The next prime is 22101011011. The reversal of 22101011001 is 10011010122.

It is a happy number.

It is not a de Polignac number, because 22101011001 - 2¹ = 22101010999 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (22101011011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409277955 + ... + 409278008.

It is an arithmetic number, because the mean of its divisors is an integer number (4092779820).

Almost surely, 2^22101011001 is an apocalyptic number.

It is an amenable number.

22101011001 is a deficient number, since it is larger than the sum of its proper divisors (10641227559).

22101011001 is an equidigital number, since it uses as much as digits as its factorization.

22101011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818555972 (or 818555966 counting only the distinct ones).

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

Adding to 22101011001 its reverse (10011010122), we get a palindrome (32112021123).

The spelling of 22101011001 in words is "twenty-two billion, one hundred one million, eleven thousand, one".