1121212002200 has 96 divisors (see below), whose sum is σ = 2671200126000. Its totient is φ = 437414860800.

The previous prime is 1121212002191. The next prime is 1121212002263. The reversal of 1121212002200 is 22002121211.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 29985116 + ... + 30022484.

Almost surely, 2^{1121212002200} is an apocalyptic number.

1121212002200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121212002200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1335600063000).

1121212002200 is an abundant number, since it is smaller than the sum of its proper divisors (1549988123800).

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

1121212002200 is a wasteful number, since it uses less digits than its factorization.

1121212002200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41085 (or 41076 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1121212002200 its reverse (22002121211), we get a palindrome (1143214123411).

The spelling of 1121212002200 in words is "one trillion, one hundred twenty-one billion, two hundred twelve million, two thousand, two hundred".