20218200196 has 12 divisors (see below), whose sum is σ = 35382946060. Its totient is φ = 10108787040.

The previous prime is 20218200179. The next prime is 20218200203. The reversal of 20218200196 is 69100281202.

It can be written as a sum of positive squares in 2 ways, for example, as 12241209600 + 7976990596 = 110640^2 + 89314^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126670 + ... + 237658.

Almost surely, 2^20218200196 is an apocalyptic number.

It is an amenable number.

20218200196 is a deficient number, since it is larger than the sum of its proper divisors (15164745864).

20218200196 is a wasteful number, since it uses less digits than its factorization.

20218200196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156534 (or 156532 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

Adding to 20218200196 its reverse (69100281202), we get a palindrome (89318481398).

The spelling of 20218200196 in words is "twenty billion, two hundred eighteen million, two hundred thousand, one hundred ninety-six".