100402220 has 12 divisors (see below), whose sum is σ = 210844704. Its totient is φ = 40160880.

The previous prime is 100402219. The next prime is 100402223. The reversal of 100402220 is 22204001.

It is not an unprimeable number, because it can be changed into a prime (100402223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2510036 + ... + 2510075.

It is an arithmetic number, because the mean of its divisors is an integer number (17570392).

Almost surely, 2^100402220 is an apocalyptic number.

100402220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100402220 is an abundant number, since it is smaller than the sum of its proper divisors (110442484).

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

100402220 is a wasteful number, since it uses less digits than its factorization.

100402220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5020120 (or 5020118 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 100402220 is about 10020.0908179517. The cubic root of 100402220 is about 464.7803641514.

Adding to 100402220 its reverse (22204001), we get a palindrome (122606221).

The spelling of 100402220 in words is "one hundred million, four hundred two thousand, two hundred twenty".