100000012220 has 24 divisors (see below), whose sum is σ = 222352969104. Its totient is φ = 37647063296.

The previous prime is 100000012193. The next prime is 100000012223. The reversal of 100000012220 is 22210000001.

It is a junction number, because it is equal to n+sod(n) for n = 100000012198 and 100000012207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100000012223) 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, 147058502 + ... + 147059181.

It is an arithmetic number, because the mean of its divisors is an integer number (9264707046).

Almost surely, 2^100000012220 is an apocalyptic number.

100000012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100000012220 is an abundant number, since it is smaller than the sum of its proper divisors (122352956884).

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

100000012220 is a wasteful number, since it uses less digits than its factorization.

100000012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294117709 (or 294117707 counting only the distinct ones).

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

Adding to 100000012220 its reverse (22210000001), we get a palindrome (122210012221).

The spelling of 100000012220 in words is "one hundred billion, twelve thousand, two hundred twenty".