1002011011200 has 144 divisors (see below), whose sum is σ = 3575405018250. Its totient is φ = 267202928640.

The previous prime is 1002011011189. The next prime is 1002011011231. The reversal of 1002011011200 is 21101102001.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 483714686016 + 518296325184 = 695496^2 + 719928^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 17367225 + ... + 17424824.

Almost surely, 2^{1002011011200} is an apocalyptic number.

1002011011200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002011011200 is an abundant number, since it is smaller than the sum of its proper divisors (2573394007050).

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

1002011011200 is a wasteful number, since it uses less digits than its factorization.

1002011011200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34792079 (or 34792059 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1002011011200 its reverse (21101102001), we get a palindrome (1023112113201).

The spelling of 1002011011200 in words is "one trillion, two billion, eleven million, eleven thousand, two hundred".