100001012221100 has 36 divisors (see below), whose sum is σ = 217002765757008. Its totient is φ = 40000299960000.

The previous prime is 100001012221037. The next prime is 100001012221111. The reversal of 100001012221100 is 1122210100001.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45209945 + ... + 47370255.

Almost surely, 2^{100001012221100} is an apocalyptic number.

100001012221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100001012221100 is an abundant number, since it is smaller than the sum of its proper divisors (117001753535908).

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

100001012221100 is a wasteful number, since it uses less digits than its factorization.

100001012221100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2623226 (or 2623219 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 100001012221100 its reverse (1122210100001), we get a palindrome (101123222321101).

The spelling of 100001012221100 in words is "one hundred trillion, one billion, twelve million, two hundred twenty-one thousand, one hundred".