1121002001100 has 54 divisors (see below), whose sum is σ = 3513718497380. Its totient is φ = 298933866720.

The previous prime is 1121002001081. The next prime is 1121002001101. The reversal of 1121002001100 is 11002001211.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (1121002001101) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 622777990 + ... + 622779789.

Almost surely, 2^{1121002001100} is an apocalyptic number.

1121002001100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121002001100 is an abundant number, since it is smaller than the sum of its proper divisors (2392716496280).

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

1121002001100 is a wasteful number, since it uses less digits than its factorization.

1121002001100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245557799 (or 1245557789 counting only the distinct ones).

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

Adding to 1121002001100 its reverse (11002001211), we get a palindrome (1132004002311).

The spelling of 1121002001100 in words is "one trillion, one hundred twenty-one billion, two million, one thousand, one hundred".