1111222112020 has 48 divisors (see below), whose sum is σ = 2384708594688. Its totient is φ = 434759321600.

The previous prime is 1111222111999. The next prime is 1111222112051. The reversal of 1111222112020 is 202112221111.

It is a junction number, because it is equal to n+sod(n) for n = 1111222111985 and 1111222112003.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1135749 + ... + 1874131.

It is an arithmetic number, because the mean of its divisors is an integer number (49681429056).

Almost surely, 2^{1111222112020} is an apocalyptic number.

1111222112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111222112020 is an abundant number, since it is smaller than the sum of its proper divisors (1273486482668).

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

1111222112020 is a wasteful number, since it uses less digits than its factorization.

1111222112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740040 (or 740038 counting only the distinct ones).

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

Adding to 1111222112020 its reverse (202112221111), we get a palindrome (1313334333131).

The spelling of 1111222112020 in words is "one trillion, one hundred eleven billion, two hundred twenty-two million, one hundred twelve thousand, twenty".