22150121 has 4 divisors (see below), whose sum is σ = 25314432. Its totient is φ = 18985812.

The previous prime is 22150103. The next prime is 22150129. The reversal of 22150121 is 12105122.

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 22150121 - 2¹⁴ = 22133737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22150096 and 22150105.

It is not an unprimeable number, because it can be changed into a prime (22150129) 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, 1582145 + ... + 1582158.

It is an arithmetic number, because the mean of its divisors is an integer number (6328608).

Almost surely, 2^22150121 is an apocalyptic number.

It is an amenable number.

22150121 is a deficient number, since it is larger than the sum of its proper divisors (3164311).

22150121 is an equidigital number, since it uses as much as digits as its factorization.

22150121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3164310.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 22150121 is about 4706.3915051768. The cubic root of 22150121 is about 280.8398296937.

Adding to 22150121 its reverse (12105122), we get a palindrome (34255243).

The spelling of 22150121 in words is "twenty-two million, one hundred fifty thousand, one hundred twenty-one".