22198061 has 4 divisors (see below), whose sum is σ = 23366400. Its totient is φ = 21029724.

The previous prime is 22198051. The next prime is 22198069. The reversal of 22198061 is 16089122.

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 22198061 - 2¹⁸ = 21935917 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 (22198069) 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, 584141 + ... + 584178.

It is an arithmetic number, because the mean of its divisors is an integer number (5841600).

Almost surely, 2^22198061 is an apocalyptic number.

It is an amenable number.

22198061 is a deficient number, since it is larger than the sum of its proper divisors (1168339).

22198061 is a wasteful number, since it uses less digits than its factorization.

22198061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168338.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 22198061 is about 4711.4818263472. The cubic root of 22198061 is about 281.0422929972.

The spelling of 22198061 in words is "twenty-two million, one hundred ninety-eight thousand, sixty-one".