1121121001200 has 120 divisors (see below), whose sum is σ = 3688387238128. Its totient is φ = 290885437440.

The previous prime is 1121121001171. The next prime is 1121121001219. The reversal of 1121121001200 is 21001211211.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is a congruent number.

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, 12580837 + ... + 12669636.

Almost surely, 2^{1121121001200} is an apocalyptic number.

1121121001200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121121001200 is an abundant number, since it is smaller than the sum of its proper divisors (2567266236928).

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

1121121001200 is a wasteful number, since it uses less digits than its factorization.

1121121001200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25250531 (or 25250520 counting only the distinct ones).

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

Adding to 1121121001200 its reverse (21001211211), we get a palindrome (1142122212411).

The spelling of 1121121001200 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-one million, one thousand, two hundred".