111212110022020 has 48 divisors (see below), whose sum is σ = 266909680275840. Its totient is φ = 38129778261504.

The previous prime is 111212110022011. The next prime is 111212110022087. The reversal of 111212110022020 is 20220011212111.

It is a junction number, because it is equal to n+sod(n) for n = 111212110021985 and 111212110022003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97619727 + ... + 98752393.

It is an arithmetic number, because the mean of its divisors is an integer number (5560618339080).

Almost surely, 2^{111212110022020} is an apocalyptic number.

111212110022020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111212110022020 is an abundant number, since it is smaller than the sum of its proper divisors (155697570253820).

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

111212110022020 is a wasteful number, since it uses less digits than its factorization.

111212110022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834012 (or 1834010 counting only the distinct ones).

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

Adding to 111212110022020 its reverse (20220011212111), we get a palindrome (131432121234131).

The spelling of 111212110022020 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred ten million, twenty-two thousand, twenty".