22221011001 has 16 divisors (see below), whose sum is σ = 33890776064. Its totient is φ = 12686400144.

The previous prime is 22221010997. The next prime is 22221011101. The reversal of 22221011001 is 10011012222.

It is not a de Polignac number, because 22221011001 - 2² = 22221010997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22221011101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 447541 + ... + 494706.

It is an arithmetic number, because the mean of its divisors is an integer number (2118173504).

Almost surely, 2^22221011001 is an apocalyptic number.

22221011001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22221011001 is a deficient number, since it is larger than the sum of its proper divisors (11669765063).

22221011001 is a wasteful number, since it uses less digits than its factorization.

22221011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943380.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22221011001 its reverse (10011012222), we get a palindrome (32232023223).

The spelling of 22221011001 in words is "twenty-two billion, two hundred twenty-one million, eleven thousand, one".