1101111222220 has 24 divisors (see below), whose sum is σ = 2312398721808. Its totient is φ = 440432078400.

The previous prime is 1101111222203. The next prime is 1101111222329. The reversal of 1101111222220 is 222221111011.

It is a junction number, because it is equal to n+sod(n) for n = 1101111222194 and 1101111222203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30666 + ... + 1484305.

It is an arithmetic number, because the mean of its divisors is an integer number (96349946742).

Almost surely, 2^{1101111222220} is an apocalyptic number.

1101111222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101111222220 is an abundant number, since it is smaller than the sum of its proper divisors (1211287499588).

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

1101111222220 is a wasteful number, since it uses less digits than its factorization.

1101111222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1551321 (or 1551319 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1101111222220 its reverse (222221111011), we get a palindrome (1323332333231).

It can be divided in two parts, 110111 and 1222220, that added together give a palindrome (1332331).

The spelling of 1101111222220 in words is "one trillion, one hundred one billion, one hundred eleven million, two hundred twenty-two thousand, two hundred twenty".