100020012220 has 24 divisors (see below), whose sum is σ = 210070350000. Its totient is φ = 40002609792.

The previous prime is 100020012203. The next prime is 100020012221. The reversal of 100020012220 is 22210020001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 100020012197 and 100020012206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100020012221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183465 + ... + 483424.

It is an arithmetic number, because the mean of its divisors is an integer number (8752931250).

Almost surely, 2^100020012220 is an apocalyptic number.

100020012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100020012220 is an abundant number, since it is smaller than the sum of its proper divisors (110050337780).

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

100020012220 is a wasteful number, since it uses less digits than its factorization.

100020012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674397 (or 674395 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 100020012220 its reverse (22210020001), we get a palindrome (122230032221).

The spelling of 100020012220 in words is "one hundred billion, twenty million, twelve thousand, two hundred twenty".