20312120312222 has 16 divisors (see below), whose sum is σ = 30569997970512. Its totient is φ = 10122126557760.

The previous prime is 20312120312191. The next prime is 20312120312321. The reversal of 20312120312222 is 22221302121302.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5940722 + ... + 8713002.

It is an arithmetic number, because the mean of its divisors is an integer number (1910624873157).

Almost surely, 2^{20312120312222} is an apocalyptic number.

20312120312222 is a deficient number, since it is larger than the sum of its proper divisors (10257877658290).

20312120312222 is a wasteful number, since it uses less digits than its factorization.

20312120312222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784523.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20312120312222 its reverse (22221302121302), we get a palindrome (42533422433524).

The spelling of 20312120312222 in words is "twenty trillion, three hundred twelve billion, one hundred twenty million, three hundred twelve thousand, two hundred twenty-two".