100220412 has 12 divisors (see below), whose sum is σ = 233847656. Its totient is φ = 33406800.

The previous prime is 100220363. The next prime is 100220431. The reversal of 100220412 is 214022001.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 8351701 = 100220412 / (1 + 0 + 0 + 2 + 2 + 0 + 4 + 1 + 2).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4175839 + ... + 4175862.

Almost surely, 2^100220412 is an apocalyptic number.

100220412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100220412 is an abundant number, since it is smaller than the sum of its proper divisors (133627244).

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

100220412 is a wasteful number, since it uses less digits than its factorization.

100220412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8351708 (or 8351706 counting only the distinct ones).

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

The square root of 100220412 is about 10011.0145340020. The cubic root of 100220412 is about 464.4996537435.

Adding to 100220412 its reverse (214022001), we get a palindrome (314242413).

The spelling of 100220412 in words is "one hundred million, two hundred twenty thousand, four hundred twelve".