1121201100120 has 64 divisors (see below), whose sum is σ = 3365399812320. Its totient is φ = 298827270144.

The previous prime is 1121201100101. The next prime is 1121201100209. The reversal of 1121201100120 is 210011021211.

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

It is a junction number, because it is equal to n+sod(n) for n = 1121201100096 and 1121201100105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2269459 + ... + 2718978.

Almost surely, 2^{1121201100120} is an apocalyptic number.

1121201100120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121201100120 is an abundant number, since it is smaller than the sum of its proper divisors (2244198712200).

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

1121201100120 is a wasteful number, since it uses less digits than its factorization.

1121201100120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4990324 (or 4990320 counting only the distinct ones).

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

Adding to 1121201100120 its reverse (210011021211), we get a palindrome (1331212121331).

The spelling of 1121201100120 in words is "one trillion, one hundred twenty-one billion, two hundred one million, one hundred thousand, one hundred twenty".