100220111221212 has 24 divisors (see below), whose sum is σ = 259829917981200. Its totient is φ = 33406703740368.

The previous prime is 100220111221193. The next prime is 100220111221229. The reversal of 100220111221212 is 212122111022001.

100220111221212 is a `hidden beast` number, since 1 + 0 + 0 + 220 + 1 + 11 + 221 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 463981996287 + ... + 463981996502.

It is an arithmetic number, because the mean of its divisors is an integer number (10826246582550).

Almost surely, 2^{100220111221212} is an apocalyptic number.

100220111221212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100220111221212 is an abundant number, since it is smaller than the sum of its proper divisors (159609806759988).

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

100220111221212 is a wasteful number, since it uses less digits than its factorization.

100220111221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927963992802 (or 927963992794 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 100220111221212 its reverse (212122111022001), we get a palindrome (312342222243213).

The spelling of 100220111221212 in words is "one hundred trillion, two hundred twenty billion, one hundred eleven million, two hundred twenty-one thousand, two hundred twelve".