22198901 has 4 divisors (see below), whose sum is σ = 22240032. Its totient is φ = 22157772.

The previous prime is 22198877. The next prime is 22198903. The reversal of 22198901 is 10989122.

It is a happy number.

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 22198901 - 2⁶ = 22198837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22198903) 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, 19745 + ... + 20838.

It is an arithmetic number, because the mean of its divisors is an integer number (5560008).

Almost surely, 2^22198901 is an apocalyptic number.

It is an amenable number.

22198901 is a deficient number, since it is larger than the sum of its proper divisors (41131).

22198901 is an equidigital number, since it uses as much as digits as its factorization.

22198901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41130.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 22198901 is about 4711.5709694326. The cubic root of 22198901 is about 281.0458379397.

The spelling of 22198901 in words is "twenty-two million, one hundred ninety-eight thousand, nine hundred one".