100111221010000 has 100 divisors (see below), whose sum is σ = 243866270588512. Its totient is φ = 39798816048000.

The previous prime is 100111221009979. The next prime is 100111221010079. The reversal of 100111221010000 is 10122111001.

It is a tau number, because it is divible by the number of its divisors (100).

It is a super-2 number, since 2×100111221010000² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 29078964 + ... + 32338963.

Almost surely, 2^{100111221010000} is an apocalyptic number.

100111221010000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100111221010000 is an abundant number, since it is smaller than the sum of its proper divisors (143755049578512).

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

100111221010000 is an equidigital number, since it uses as much as digits as its factorization.

100111221010000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61418118 (or 61418097 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 100111221010000 its reverse (10122111001), we get a palindrome (100121343121001).

The spelling of 100111221010000 in words is "one hundred trillion, one hundred eleven billion, two hundred twenty-one million, ten thousand".