22022151 has 4 divisors (see below), whose sum is σ = 29362872. Its totient is φ = 14681432.

The previous prime is 22022131. The next prime is 22022153. The reversal of 22022151 is 15122022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22022151 - 2⁶ = 22022087 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22022151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22022153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3670356 + ... + 3670361.

It is an arithmetic number, because the mean of its divisors is an integer number (7340718).

Almost surely, 2^22022151 is an apocalyptic number.

22022151 is a deficient number, since it is larger than the sum of its proper divisors (7340721).

22022151 is an equidigital number, since it uses as much as digits as its factorization.

22022151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7340720.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 22022151 is about 4692.7764702785. The cubic root of 22022151 is about 280.2979439042.

Adding to 22022151 its reverse (15122022), we get a palindrome (37144173).

The spelling of 22022151 in words is "twenty-two million, twenty-two thousand, one hundred fifty-one".