20312313012222 has 64 divisors (see below), whose sum is σ = 51150358614528. Its totient is φ = 5223688560000.

The previous prime is 20312313012197. The next prime is 20312313012227. The reversal of 20312313012222 is 22221031321302.

It is a junction number, because it is equal to n+sod(n) for n = 20312313012192 and 20312313012201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312313012227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 217607029 + ... + 217700352.

It is an arithmetic number, because the mean of its divisors is an integer number (799224353352).

Almost surely, 2^{20312313012222} is an apocalyptic number.

20312313012222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20312313012222 is an abundant number, since it is smaller than the sum of its proper divisors (30838045602306).

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

20312313012222 is a wasteful number, since it uses less digits than its factorization.

20312313012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435307505.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 20312313012222 its reverse (22221031321302), we get a palindrome (42533344333524).

The spelling of 20312313012222 in words is "twenty trillion, three hundred twelve billion, three hundred thirteen million, twelve thousand, two hundred twenty-two".