22221874 has 4 divisors (see below), whose sum is σ = 33332814. Its totient is φ = 11110936.

The previous prime is 22221853. The next prime is 22221889. The reversal of 22221874 is 47812222.

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

It can be written as a sum of positive squares in only one way, i.e., 11937025 + 10284849 = 3455^2 + 3207^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555467 + ... + 5555470.

Almost surely, 2^22221874 is an apocalyptic number.

22221874 is a deficient number, since it is larger than the sum of its proper divisors (11110940).

22221874 is a wasteful number, since it uses less digits than its factorization.

22221874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11110939.

The product of its digits is 3584, while the sum is 28.

The square root of 22221874 is about 4714.0082732214. The cubic root of 22221874 is about 281.1427532496.

It can be divided in two parts, 2222 and 1874, that added together give a 12-th power (4096 = 2¹²).

The spelling of 22221874 in words is "twenty-two million, two hundred twenty-one thousand, eight hundred seventy-four".