1121202112100 has 72 divisors (see below), whose sum is σ = 2782065894720. Its totient is φ = 384206901120.

The previous prime is 1121202112099. The next prime is 1121202112127. The reversal of 1121202112100 is 12112021211.

It is a Harshad number since it is a multiple of its sum of digits (14).

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, 887231 + ... + 1740569.

Almost surely, 2^{1121202112100} is an apocalyptic number.

1121202112100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121202112100 is an abundant number, since it is smaller than the sum of its proper divisors (1660863782620).

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

1121202112100 is a wasteful number, since it uses less digits than its factorization.

1121202112100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855237 (or 855230 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1121202112100 its reverse (12112021211), we get a palindrome (1133314133311).

The spelling of 1121202112100 in words is "one trillion, one hundred twenty-one billion, two hundred two million, one hundred twelve thousand, one hundred".