3111222112020 has 144 divisors (see below), whose sum is σ = 10425637797120. Its totient is φ = 744688339200.

The previous prime is 3111222111979. The next prime is 3111222112057. The reversal of 3111222112020 is 202112221113.

3111222112020 is a `hidden beast` number, since 311 + 1 + 222 + 112 + 0 + 20 = 666.

3111222112020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 3111222111984 and 3111222112002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9788671 + ... + 10101510.

It is an arithmetic number, because the mean of its divisors is an integer number (72400262480).

Almost surely, 2^{3111222112020} is an apocalyptic number.

3111222112020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3111222112020 is an abundant number, since it is smaller than the sum of its proper divisors (7314415685100).

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

3111222112020 is a wasteful number, since it uses less digits than its factorization.

3111222112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19890286 (or 19890281 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 3111222112020 its reverse (202112221113), we get a palindrome (3313334333133).

The spelling of 3111222112020 in words is "three trillion, one hundred eleven billion, two hundred twenty-two million, one hundred twelve thousand, twenty".