100000201020 has 48 divisors (see below), whose sum is σ = 280132315008. Its totient is φ = 26654172480.

The previous prime is 100000201009. The next prime is 100000201031. The reversal of 100000201020 is 20102000001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (100000201009) and next prime (100000201031).

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263194 + ... + 518913.

It is an arithmetic number, because the mean of its divisors is an integer number (5836089896).

Almost surely, 2^100000201020 is an apocalyptic number.

100000201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100000201020 is an abundant number, since it is smaller than the sum of its proper divisors (180132113988).

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

100000201020 is a wasteful number, since it uses less digits than its factorization.

100000201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784250 (or 784248 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 100000201020 its reverse (20102000001), we get a palindrome (120102201021).

The spelling of 100000201020 in words is "one hundred billion, two hundred one thousand, twenty".