22021011121 has 8 divisors (see below), whose sum is σ = 22291212384. Its totient is φ = 21750926400.

The previous prime is 22021011109. The next prime is 22021011137. The reversal of 22021011121 is 12111012022.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22021011121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22021012121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387321 + ... + 440521.

It is an arithmetic number, because the mean of its divisors is an integer number (2786401548).

Almost surely, 2^22021011121 is an apocalyptic number.

It is an amenable number.

22021011121 is a deficient number, since it is larger than the sum of its proper divisors (270201263).

22021011121 is an equidigital number, since it uses as much as digits as its factorization.

22021011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58271.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22021011121 its reverse (12111012022), we get a palindrome (34132023143).

Subtracting from 22021011121 its reverse (12111012022), we obtain a palindrome (9909999099).

The spelling of 22021011121 in words is "twenty-two billion, twenty-one million, eleven thousand, one hundred twenty-one".