22210121021 has 4 divisors (see below), whose sum is σ = 24229222944. Its totient is φ = 20191019100.

The previous prime is 22210120973. The next prime is 22210121057. The reversal of 22210121021 is 12012101222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22210121021 - 2⁶ = 22210120957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22210120987 and 22210121005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22210121071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1009550945 + ... + 1009550966.

It is an arithmetic number, because the mean of its divisors is an integer number (6057305736).

Almost surely, 2^22210121021 is an apocalyptic number.

It is an amenable number.

22210121021 is a deficient number, since it is larger than the sum of its proper divisors (2019101923).

22210121021 is a wasteful number, since it uses less digits than its factorization.

22210121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019101922.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22210121021 its reverse (12012101222), we get a palindrome (34222222243).

The spelling of 22210121021 in words is "twenty-two billion, two hundred ten million, one hundred twenty-one thousand, twenty-one".