100220221212 has 24 divisors (see below), whose sum is σ = 233934093456. Its totient is φ = 33394324608.

The previous prime is 100220221207. The next prime is 100220221237. The reversal of 100220221212 is 212122022001.

It is a junction number, because it is equal to n+sod(n) for n = 100220221191 and 100220221200.

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, 1518313 + ... + 1582944.

It is an arithmetic number, because the mean of its divisors is an integer number (9747253894).

Almost surely, 2^100220221212 is an apocalyptic number.

100220221212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100220221212 is an abundant number, since it is smaller than the sum of its proper divisors (133713872244).

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

100220221212 is a wasteful number, since it uses less digits than its factorization.

100220221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3103957 (or 3103955 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 100220221212 its reverse (212122022001), we get a palindrome (312342243213).

The spelling of 100220221212 in words is "one hundred billion, two hundred twenty million, two hundred twenty-one thousand, two hundred twelve".