100100012221212 has 12 divisors (see below), whose sum is σ = 233566695182856. Its totient is φ = 33366670740400.

The previous prime is 100100012221141. The next prime is 100100012221247. The reversal of 100100012221212 is 212122210001001.

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

It is a junction number, because it is equal to n+sod(n) for n = 100100012221191 and 100100012221200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4170833842539 + ... + 4170833842562.

It is an arithmetic number, because the mean of its divisors is an integer number (19463891265238).

Almost surely, 2^{100100012221212} is an apocalyptic number.

100100012221212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100100012221212 is an abundant number, since it is smaller than the sum of its proper divisors (133466682961644).

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

100100012221212 is a wasteful number, since it uses less digits than its factorization.

100100012221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8341667685108 (or 8341667685106 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 100100012221212 its reverse (212122210001001), we get a palindrome (312222222222213).

The spelling of 100100012221212 in words is "one hundred trillion, one hundred billion, twelve million, two hundred twenty-one thousand, two hundred twelve".