3111223223020 has 36 divisors (see below), whose sum is σ = 7181526007152. Its totient is φ = 1131353898400.

The previous prime is 3111223223011. The next prime is 3111223223029. The reversal of 3111223223020 is 203223221113.

It is an interprime number because it is at equal distance from previous prime (3111223223011) and next prime (3111223223029).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 3111223222982 and 3111223223000.

It is not an unprimeable number, because it can be changed into a prime (3111223223029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 642812296 + ... + 642817135.

It is an arithmetic number, because the mean of its divisors is an integer number (199486833532).

Almost surely, 2^{3111223223020} is an apocalyptic number.

It is an amenable number.

3111223223020 is an abundant number, since it is smaller than the sum of its proper divisors (4070302784132).

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

3111223223020 is a wasteful number, since it uses less digits than its factorization.

3111223223020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285629462 (or 1285629449 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 3111223223020 its reverse (203223221113), we get a palindrome (3314446444133).

The spelling of 3111223223020 in words is "three trillion, one hundred eleven billion, two hundred twenty-three million, two hundred twenty-three thousand, twenty".