100101203220 has 96 divisors (see below), whose sum is σ = 296157818880. Its totient is φ = 25192494720.

The previous prime is 100101203197. The next prime is 100101203227. The reversal of 100101203220 is 22302101001.

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 = 100101203196 and 100101203205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100101203227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132885 + ... + 466755.

It is an arithmetic number, because the mean of its divisors is an integer number (3084977280).

Almost surely, 2^100101203220 is an apocalyptic number.

100101203220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100101203220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148078909440).

100101203220 is an abundant number, since it is smaller than the sum of its proper divisors (196056615660).

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

100101203220 is a wasteful number, since it uses less digits than its factorization.

100101203220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334165 (or 334163 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 100101203220 its reverse (22302101001), we get a palindrome (122403304221).

The spelling of 100101203220 in words is "one hundred billion, one hundred one million, two hundred three thousand, two hundred twenty".