1002111212100 has 72 divisors (see below), whose sum is σ = 3025504480320. Its totient is φ = 255610974080.

The previous prime is 1002111211991. The next prime is 1002111212119. The reversal of 1002111212100 is 12121112001.

1002111212100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72609855 + ... + 72623654.

It is an arithmetic number, because the mean of its divisors is an integer number (42020895560).

Almost surely, 2^{1002111212100} is an apocalyptic number.

1002111212100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002111212100 is an abundant number, since it is smaller than the sum of its proper divisors (2023393268220).

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

1002111212100 is a wasteful number, since it uses less digits than its factorization.

1002111212100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145233549 (or 145233542 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1002111212100 its reverse (12121112001), we get a palindrome (1014232324101).

The spelling of 1002111212100 in words is "one trillion, two billion, one hundred eleven million, two hundred twelve thousand, one hundred".