123213221210020 has 48 divisors (see below), whose sum is σ = 259202164128768. Its totient is φ = 49198753814400.

The previous prime is 123213221210011. The next prime is 123213221210021. The reversal of 123213221210020 is 20012122312321.

It is a junction number, because it is equal to n+sod(n) for n = 123213221209973 and 123213221210000.

It is not an unprimeable number, because it can be changed into a prime (123213221210021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112270945 + ... + 113363095.

It is an arithmetic number, because the mean of its divisors is an integer number (5400045086016).

Almost surely, 2^{123213221210020} is an apocalyptic number.

123213221210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123213221210020 is an abundant number, since it is smaller than the sum of its proper divisors (135988942918748).

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

123213221210020 is a wasteful number, since it uses less digits than its factorization.

123213221210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102060 (or 1102058 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 123213221210020 its reverse (20012122312321), we get a palindrome (143225343522341).

The spelling of 123213221210020 in words is "one hundred twenty-three trillion, two hundred thirteen billion, two hundred twenty-one million, two hundred ten thousand, twenty".