100201988 has 12 divisors (see below), whose sum is σ = 175457100. Its totient is φ = 50071392.

The previous prime is 100201963. The next prime is 100201993. The reversal of 100201988 is 889102001.

It can be written as a sum of positive squares in 2 ways, for example, as 53114944 + 47087044 = 7288^2 + 6862^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 100201988.

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, 1370 + ... + 14222.

It is an arithmetic number, because the mean of its divisors is an integer number (14621425).

Almost surely, 2^100201988 is an apocalyptic number.

It is an amenable number.

100201988 is a deficient number, since it is larger than the sum of its proper divisors (75255112).

100201988 is a wasteful number, since it uses less digits than its factorization.

100201988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14806 (or 14804 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 100201988 is about 10010.0943052501. The cubic root of 100201988 is about 464.4711882645.

Adding to 100201988 its reverse (889102001), we get a palindrome (989303989).

The spelling of 100201988 in words is "one hundred million, two hundred one thousand, nine hundred eighty-eight".