100012222020 has 192 divisors, whose sum is σ = 286239744000. Its totient is φ = 26087846400.

The previous prime is 100012221949. The next prime is 100012222031. The reversal of 100012222020 is 20222210001.

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 = 100012221987 and 100012222005.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 288219487 + ... + 288219833.

It is an arithmetic number, because the mean of its divisors is an integer number (1490832000).

Almost surely, 2^100012222020 is an apocalyptic number.

100012222020 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 100012222020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143119872000).

100012222020 is an abundant number, since it is smaller than the sum of its proper divisors (186227521980).

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

100012222020 is a wasteful number, since it uses less digits than its factorization.

100012222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898 (or 896 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 100012222020 its reverse (20222210001), we get a palindrome (120234432021).

The spelling of 100012222020 in words is "one hundred billion, twelve million, two hundred twenty-two thousand, twenty".