1121100100220 has 12 divisors (see below), whose sum is σ = 2354310210504. Its totient is φ = 448440040080.

The previous prime is 1121100100213. The next prime is 1121100100243. The reversal of 1121100100220 is 220010011211.

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 3 ways as a sum of consecutive naturals, for example, 28027502486 + ... + 28027502525.

It is an arithmetic number, because the mean of its divisors is an integer number (196192517542).

Almost surely, 2^{1121100100220} is an apocalyptic number.

1121100100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121100100220 is an abundant number, since it is smaller than the sum of its proper divisors (1233210110284).

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

1121100100220 is a wasteful number, since it uses less digits than its factorization.

1121100100220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56055005020 (or 56055005018 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1121100100220 its reverse (220010011211), we get a palindrome (1341110111431).

The spelling of 1121100100220 in words is "one trillion, one hundred twenty-one billion, one hundred million, one hundred thousand, two hundred twenty".