1121112100220 has 72 divisors (see below), whose sum is σ = 2746991565360. Its totient is φ = 383219907840.

The previous prime is 1121112100201. The next prime is 1121112100223. The reversal of 1121112100220 is 220012111211.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1121112100195 and 1121112100204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121112100223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1403705 + ... + 2052464.

It is an arithmetic number, because the mean of its divisors is an integer number (38152660630).

Almost surely, 2^{1121112100220} is an apocalyptic number.

1121112100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121112100220 is an abundant number, since it is smaller than the sum of its proper divisors (1625879465140).

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

1121112100220 is a wasteful number, since it uses less digits than its factorization.

1121112100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3456523 (or 3456514 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1121112100220 its reverse (220012111211), we get a palindrome (1341124211431).

The spelling of 1121112100220 in words is "one trillion, one hundred twenty-one billion, one hundred twelve million, one hundred thousand, two hundred twenty".