20213123031222 has 32 divisors (see below), whose sum is σ = 44128299930624. Its totient is φ = 6121447048800.

The previous prime is 20213123031173. The next prime is 20213123031259. The reversal of 20213123031222 is 22213032131202.

It is a junction number, because it is equal to n+sod(n) for n = 20213123031192 and 20213123031201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93434854 + ... + 93650937.

It is an arithmetic number, because the mean of its divisors is an integer number (1379009372832).

Almost surely, 2^{20213123031222} is an apocalyptic number.

20213123031222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20213123031222 is an abundant number, since it is smaller than the sum of its proper divisors (23915176899402).

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

20213123031222 is a wasteful number, since it uses less digits than its factorization.

20213123031222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187087444.

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

Adding to 20213123031222 its reverse (22213032131202), we get a palindrome (42426155162424).

The spelling of 20213123031222 in words is "twenty trillion, two hundred thirteen billion, one hundred twenty-three million, thirty-one thousand, two hundred twenty-two".