1121212102100 has 36 divisors (see below), whose sum is σ = 2438572567200. Its totient is φ = 447463217760.

The previous prime is 1121212102097. The next prime is 1121212102121. The reversal of 1121212102100 is 12012121211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12726170 + ... + 12813969.

Almost surely, 2^{1121212102100} is an apocalyptic number.

1121212102100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121212102100 is an abundant number, since it is smaller than the sum of its proper divisors (1317360465100).

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

1121212102100 is a wasteful number, since it uses less digits than its factorization.

1121212102100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25540592 (or 25540585 counting only the distinct ones).

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

Adding to 1121212102100 its reverse (12012121211), we get a palindrome (1133224223311).

The spelling of 1121212102100 in words is "one trillion, one hundred twenty-one billion, two hundred twelve million, one hundred two thousand, one hundred".