22122021021 has 8 divisors (see below), whose sum is σ = 29507573664. Its totient is φ = 14742241200.

The previous prime is 22122021017. The next prime is 22122021029. The reversal of 22122021021 is 12012022122.

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

It is not a de Polignac number, because 22122021021 - 2² = 22122021017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122021029) 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, 1434255 + ... + 1449596.

It is an arithmetic number, because the mean of its divisors is an integer number (3688446708).

Almost surely, 2^22122021021 is an apocalyptic number.

It is an amenable number.

22122021021 is a deficient number, since it is larger than the sum of its proper divisors (7385552643).

22122021021 is a wasteful number, since it uses less digits than its factorization.

22122021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2886411.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22122021021 its reverse (12012022122), we get a palindrome (34134043143).

The spelling of 22122021021 in words is "twenty-two billion, one hundred twenty-two million, twenty-one thousand, twenty-one".