100201986 has 12 divisors (see below), whose sum is σ = 217104342. Its totient is φ = 33400656.

The previous prime is 100201963. The next prime is 100201993. The reversal of 100201986 is 689102001.

It can be written as a sum of positive squares in only one way, i.e., 73359225 + 26842761 = 8565^2 + 5181^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2783371 + ... + 2783406.

Almost surely, 2^100201986 is an apocalyptic number.

100201986 is an abundant number, since it is smaller than the sum of its proper divisors (116902356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100201986 is a wasteful number, since it uses less digits than its factorization.

100201986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5566785 (or 5566782 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 100201986 is about 10010.0942053509. The cubic root of 100201986 is about 464.4711851743.

Adding to 100201986 its reverse (689102001), we get a palindrome (789303987).

The spelling of 100201986 in words is "one hundred million, two hundred one thousand, nine hundred eighty-six".