1121100121020 has 48 divisors (see below), whose sum is σ = 3424451280768. Its totient is φ = 271781847360.

The previous prime is 1121100121019. The next prime is 1121100121073. The reversal of 1121100121020 is 201210011211.

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 = 1121100120987 and 1121100121005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 849317614 + ... + 849318933.

It is an arithmetic number, because the mean of its divisors is an integer number (71342735016).

Almost surely, 2^{1121100121020} is an apocalyptic number.

1121100121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121100121020 is an abundant number, since it is smaller than the sum of its proper divisors (2303351159748).

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

1121100121020 is a wasteful number, since it uses less digits than its factorization.

1121100121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698636570 (or 1698636568 counting only the distinct ones).

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

Adding to 1121100121020 its reverse (201210011211), we get a palindrome (1322310132231).

The spelling of 1121100121020 in words is "one trillion, one hundred twenty-one billion, one hundred million, one hundred twenty-one thousand, twenty".