22120200218 has 4 divisors (see below), whose sum is σ = 33180300330. Its totient is φ = 11060100108.

The previous prime is 22120200211. The next prime is 22120200241. The reversal of 22120200218 is 81200202122.

It is a happy number.

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., 20567288569 + 1552911649 = 143413^2 + 39407^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22120200218.

It is not an unprimeable number, because it can be changed into a prime (22120200211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5530050053 + ... + 5530050056.

Almost surely, 2^22120200218 is an apocalyptic number.

22120200218 is a deficient number, since it is larger than the sum of its proper divisors (11060100112).

22120200218 is a wasteful number, since it uses less digits than its factorization.

22120200218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11060100111.

The product of its (nonzero) digits is 256, while the sum is 20.

The spelling of 22120200218 in words is "twenty-two billion, one hundred twenty million, two hundred thousand, two hundred eighteen".