22201120021 has 8 divisors (see below), whose sum is σ = 22831416864. Its totient is φ = 21578653200.

The previous prime is 22201120013. The next prime is 22201120033. The reversal of 22201120021 is 12002110222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22201120021 - 2³ = 22201120013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22201119983 and 22201120010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201120061) 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, 1951755 + ... + 1963096.

It is an arithmetic number, because the mean of its divisors is an integer number (2853927108).

Almost surely, 2^22201120021 is an apocalyptic number.

It is an amenable number.

22201120021 is a deficient number, since it is larger than the sum of its proper divisors (630296843).

22201120021 is a wasteful number, since it uses less digits than its factorization.

22201120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3915011.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22201120021 its reverse (12002110222), we get a palindrome (34203230243).

The spelling of 22201120021 in words is "twenty-two billion, two hundred one million, one hundred twenty thousand, twenty-one".