22221850 has 48 divisors (see below), whose sum is σ = 47639808. Its totient is φ = 7554240.

The previous prime is 22221847. The next prime is 22221853. The reversal of 22221850 is 5812222.

It is an interprime number because it is at equal distance from previous prime (22221847) and next prime (22221853).

It is not an unprimeable number, because it can be changed into a prime (22221853) 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, 60367 + ... + 60733.

It is an arithmetic number, because the mean of its divisors is an integer number (992496).

Almost surely, 2^22221850 is an apocalyptic number.

22221850 is an abundant number, since it is smaller than the sum of its proper divisors (25417958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22221850 is a wasteful number, since it uses less digits than its factorization.

22221850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559 (or 554 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 22221850 is about 4714.0057276164. The cubic root of 22221850 is about 281.1426520366.

The spelling of 22221850 in words is "twenty-two million, two hundred twenty-one thousand, eight hundred fifty".