20022221158 has 4 divisors (see below), whose sum is σ = 30033331740. Its totient is φ = 10011110578.

The previous prime is 20022221143. The next prime is 20022221159. The reversal of 20022221158 is 85112222002.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022221159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005555288 + ... + 5005555291.

It is an arithmetic number, because the mean of its divisors is an integer number (7508332935).

Almost surely, 2^20022221158 is an apocalyptic number.

20022221158 is a deficient number, since it is larger than the sum of its proper divisors (10011110582).

20022221158 is a wasteful number, since it uses less digits than its factorization.

20022221158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10011110581.

The product of its (nonzero) digits is 1280, while the sum is 25.

The spelling of 20022221158 in words is "twenty billion, twenty-two million, two hundred twenty-one thousand, one hundred fifty-eight".