1011002001200 has 30 divisors (see below), whose sum is σ = 2428932308844. Its totient is φ = 404400800320.

The previous prime is 1011002001173. The next prime is 1011002001209. The reversal of 1011002001200 is 21002001101.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is not an unprimeable number, because it can be changed into a prime (1011002001209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1263752102 + ... + 1263752901.

Almost surely, 2^{1011002001200} is an apocalyptic number.

1011002001200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011002001200 is an abundant number, since it is smaller than the sum of its proper divisors (1417930307644).

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

1011002001200 is a wasteful number, since it uses less digits than its factorization.

1011002001200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527505021 (or 2527505010 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1011002001200 its reverse (21002001101), we get a palindrome (1032004002301).

Subtracting from 1011002001200 its reverse (21002001101), we obtain a palindrome (990000000099).

The spelling of 1011002001200 in words is "one trillion, eleven billion, two million, one thousand, two hundred".