22198311 has 24 divisors (see below), whose sum is σ = 35128080. Its totient is φ = 13445376.

The previous prime is 22198307. The next prime is 22198313. The reversal of 22198311 is 11389122.

It is not a de Polignac number, because 22198311 - 2² = 22198307 is a prime.

It is a super-2 number, since 2×22198311² = 985530022505442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22198313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1936 + ... + 6938.

It is an arithmetic number, because the mean of its divisors is an integer number (1463670).

Almost surely, 2^22198311 is an apocalyptic number.

22198311 is a deficient number, since it is larger than the sum of its proper divisors (12929769).

22198311 is a wasteful number, since it uses less digits than its factorization.

22198311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5055 (or 5052 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 22198311 is about 4711.5083572037. The cubic root of 22198311 is about 281.0433480489.

The spelling of 22198311 in words is "twenty-two million, one hundred ninety-eight thousand, three hundred eleven".