100221111111210 has 128 divisors (see below), whose sum is σ = 263241974649600. Its totient is φ = 24321838264320.

The previous prime is 100221111111181. The next prime is 100221111111239. The reversal of 100221111111210 is 12111111122001.

It is an interprime number because it is at equal distance from previous prime (100221111111181) and next prime (100221111111239).

It is a super-2 number, since 2×100221111111210² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 100221111111210.

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 63 ways as a sum of consecutive naturals, for example, 25465425 + ... + 29136404.

It is an arithmetic number, because the mean of its divisors is an integer number (2056577926950).

Almost surely, 2^{100221111111210} is an apocalyptic number.

100221111111210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100221111111210 is an abundant number, since it is smaller than the sum of its proper divisors (163020863538390).

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

100221111111210 is a wasteful number, since it uses less digits than its factorization.

100221111111210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54601976.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 100221111111210 its reverse (12111111122001), we get a palindrome (112332222233211).

The spelling of 100221111111210 in words is "one hundred trillion, two hundred twenty-one billion, one hundred eleven million, one hundred eleven thousand, two hundred ten".