1121100202020 has 48 divisors (see below), whose sum is σ = 3223920587328. Its totient is φ = 290880051840.

The previous prime is 1121100202007. The next prime is 1121100202037. The reversal of 1121100202020 is 202020011211.

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 = 1121100201987 and 1121100202005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252497826 + ... + 252502265.

It is an arithmetic number, because the mean of its divisors is an integer number (67165012236).

Almost surely, 2^{1121100202020} is an apocalyptic number.

1121100202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121100202020 is an abundant number, since it is smaller than the sum of its proper divisors (2102820385308).

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

1121100202020 is a wasteful number, since it uses less digits than its factorization.

1121100202020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505000140 (or 505000138 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1121100202020 its reverse (202020011211), we get a palindrome (1323120213231).

The spelling of 1121100202020 in words is "one trillion, one hundred twenty-one billion, one hundred million, two hundred two thousand, twenty".