22120012021 has 8 divisors (see below), whose sum is σ = 23467566080. Its totient is φ = 20790792288.

The previous prime is 22120011997. The next prime is 22120012051. The reversal of 22120012021 is 12021002122.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 22120012021 - 2⁵ = 22120011989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22120011992 and 22120012010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120012051) 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, 4581096 + ... + 4585921.

It is an arithmetic number, because the mean of its divisors is an integer number (2933445760).

Almost surely, 2^22120012021 is an apocalyptic number.

It is an amenable number.

22120012021 is a deficient number, since it is larger than the sum of its proper divisors (1347554059).

22120012021 is a wasteful number, since it uses less digits than its factorization.

22120012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9167163.

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

Adding to 22120012021 its reverse (12021002122), we get a palindrome (34141014143).

The spelling of 22120012021 in words is "twenty-two billion, one hundred twenty million, twelve thousand, twenty-one".