20311111222230 has 64 divisors (see below), whose sum is σ = 49563147273408. Its totient is φ = 5325638492160.

The previous prime is 20311111222201. The next prime is 20311111222243. The reversal of 20311111222230 is 3222211111302.

It is a junction number, because it is equal to n+sod(n) for n = 20311111222197 and 20311111222206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3285894 + ... + 7170726.

It is an arithmetic number, because the mean of its divisors is an integer number (774424176147).

Almost surely, 2^{20311111222230} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20311111222230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24781573636704).

20311111222230 is an abundant number, since it is smaller than the sum of its proper divisors (29252036051178).

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

20311111222230 is a wasteful number, since it uses less digits than its factorization.

20311111222230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3887761.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 20311111222230 its reverse (3222211111302), we get a palindrome (23533322333532).

The spelling of 20311111222230 in words is "twenty trillion, three hundred eleven billion, one hundred eleven million, two hundred twenty-two thousand, two hundred thirty".