1000111121200 has 60 divisors (see below), whose sum is σ = 2403371058088. Its totient is φ = 399943872000.

The previous prime is 1000111121179. The next prime is 1000111121231. The reversal of 1000111121200 is 21211110001.

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

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, 1288900 + ... + 1913500.

Almost surely, 2^{1000111121200} is an apocalyptic number.

1000111121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000111121200 is an abundant number, since it is smaller than the sum of its proper divisors (1403259936888).

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

1000111121200 is a wasteful number, since it uses less digits than its factorization.

1000111121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628622 (or 628611 counting only the distinct ones).

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

Adding to 1000111121200 its reverse (21211110001), we get a palindrome (1021322231201).

The spelling of 1000111121200 in words is "one trillion, one hundred eleven million, one hundred twenty-one thousand, two hundred".