20212323123340 has 12 divisors (see below), whose sum is σ = 42445878559056. Its totient is φ = 8084929249328.

The previous prime is 20212323123331. The next prime is 20212323123367. The reversal of 20212323123340 is 4332132321202.

It is a junction number, because it is equal to n+sod(n) for n = 20212323123299 and 20212323123308.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505308078064 + ... + 505308078103.

It is an arithmetic number, because the mean of its divisors is an integer number (3537156546588).

Almost surely, 2^{20212323123340} is an apocalyptic number.

20212323123340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20212323123340 is an abundant number, since it is smaller than the sum of its proper divisors (22233555435716).

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

20212323123340 is a wasteful number, since it uses less digits than its factorization.

20212323123340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010616156176 (or 1010616156174 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 20212323123340 its reverse (4332132321202), we get a palindrome (24544455444542).

The spelling of 20212323123340 in words is "twenty trillion, two hundred twelve billion, three hundred twenty-three million, one hundred twenty-three thousand, three hundred forty".