100202020 has 24 divisors (see below), whose sum is σ = 213091200. Its totient is φ = 39572832.

The previous prime is 100202017. The next prime is 100202027. The reversal of 100202020 is 20202001.

It is a happy number.

100202020 is a modest number, since divided by 202020 gives 100 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 100201994 and 100202012.

It is not an unprimeable number, because it can be changed into a prime (100202027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30130 + ... + 33289.

It is an arithmetic number, because the mean of its divisors is an integer number (8878800).

Almost surely, 2^100202020 is an apocalyptic number.

100202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100202020 is an abundant number, since it is smaller than the sum of its proper divisors (112889180).

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

100202020 is a wasteful number, since it uses less digits than its factorization.

100202020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63507 (or 63505 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 100202020 is about 10010.0959036365. The cubic root of 100202020 is about 464.4712377082.

Adding to 100202020 its reverse (20202001), we get a palindrome (120404021).

The spelling of 100202020 in words is "one hundred million, two hundred two thousand, twenty".