20022100222 has 4 divisors (see below), whose sum is σ = 30033150336. Its totient is φ = 10011050110.

The previous prime is 20022100177. The next prime is 20022100271. The reversal of 20022100222 is 22200122002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22200122002 = 2 ⋅11100061001.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005525054 + ... + 5005525057.

It is an arithmetic number, because the mean of its divisors is an integer number (7508287584).

Almost surely, 2^20022100222 is an apocalyptic number.

20022100222 is a deficient number, since it is larger than the sum of its proper divisors (10011050114).

20022100222 is a wasteful number, since it uses less digits than its factorization.

20022100222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10011050113.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 20022100222 its reverse (22200122002), we get a palindrome (42222222224).

The spelling of 20022100222 in words is "twenty billion, twenty-two million, one hundred thousand, two hundred twenty-two".