100203020220 has 48 divisors (see below), whose sum is σ = 281686301568. Its totient is φ = 26614344000.

The previous prime is 100203020207. The next prime is 100203020231. The reversal of 100203020220 is 22020302001.

It is a super-2 number, since 2×100203020220² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 100203020196 and 100203020205.

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, 3311734 + ... + 3341853.

It is an arithmetic number, because the mean of its divisors is an integer number (5868464616).

Almost surely, 2^100203020220 is an apocalyptic number.

100203020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100203020220 is an abundant number, since it is smaller than the sum of its proper divisors (181483281348).

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

100203020220 is a wasteful number, since it uses less digits than its factorization.

100203020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6653850 (or 6653848 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 100203020220 its reverse (22020302001), we get a palindrome (122223322221).

The spelling of 100203020220 in words is "one hundred billion, two hundred three million, twenty thousand, two hundred twenty".