22101121 has 4 divisors (see below), whose sum is σ = 25258432. Its totient is φ = 18943812.

The previous prime is 22101113. The next prime is 22101143. The reversal of 22101121 is 12110122.

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 22101121 - 2³ = 22101113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22101098 and 22101107.

It is not an unprimeable number, because it can be changed into a prime (22101151) 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, 1578645 + ... + 1578658.

It is an arithmetic number, because the mean of its divisors is an integer number (6314608).

Almost surely, 2^22101121 is an apocalyptic number.

It is an amenable number.

22101121 is a deficient number, since it is larger than the sum of its proper divisors (3157311).

22101121 is an equidigital number, since it uses as much as digits as its factorization.

22101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3157310.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 22101121 is about 4701.1829362406. The cubic root of 22101121 is about 280.6325876127.

Adding to 22101121 its reverse (12110122), we get a palindrome (34211243).

Subtracting from 22101121 its reverse (12110122), we obtain a palindrome (9990999).

It can be divided in two parts, 22101 and 121, that added together give a palindrome (22222).

The spelling of 22101121 in words is "twenty-two million, one hundred one thousand, one hundred twenty-one".