22285903898 has 4 divisors (see below), whose sum is σ = 33428855850. Its totient is φ = 11142951948.

The previous prime is 22285903883. The next prime is 22285903901. The reversal of 22285903898 is 89830958222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89830958222 = 2 ⋅44915479111.

It can be written as a sum of positive squares in only one way, i.e., 19955235169 + 2330668729 = 141263^2 + 48277^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5571475973 + ... + 5571475976.

Almost surely, 2^22285903898 is an apocalyptic number.

22285903898 is a deficient number, since it is larger than the sum of its proper divisors (11142951952).

22285903898 is a wasteful number, since it uses less digits than its factorization.

22285903898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11142951951.

The product of its (nonzero) digits is 4976640, while the sum is 56.

The spelling of 22285903898 in words is "twenty-two billion, two hundred eighty-five million, nine hundred three thousand, eight hundred ninety-eight".