1121122221020 has 48 divisors (see below), whose sum is σ = 2367633541728. Its totient is φ = 445920526080.

The previous prime is 1121122220989. The next prime is 1121122221061. The reversal of 1121122221020 is 201222211211.

It is a self number, because there is not a number n which added to its sum of digits gives 1121122221020.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60614894 + ... + 60633386.

It is an arithmetic number, because the mean of its divisors is an integer number (49325698786).

Almost surely, 2^{1121122221020} is an apocalyptic number.

1121122221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121122221020 is an abundant number, since it is smaller than the sum of its proper divisors (1246511320708).

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

1121122221020 is a wasteful number, since it uses less digits than its factorization.

1121122221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35430 (or 35428 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1121122221020 its reverse (201222211211), we get a palindrome (1322344432231).

The spelling of 1121122221020 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-two million, two hundred twenty-one thousand, twenty".