123302212221020 has 144 divisors (see below), whose sum is σ = 318092584578048. Its totient is φ = 39949805427840.

The previous prime is 123302212220983. The next prime is 123302212221031. The reversal of 123302212221020 is 20122212203321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 31083236 + ... + 34824875.

It is an arithmetic number, because the mean of its divisors is an integer number (2208976281792).

Almost surely, 2^{123302212221020} is an apocalyptic number.

123302212221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123302212221020 is an abundant number, since it is smaller than the sum of its proper divisors (194790372357028).

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

123302212221020 is a wasteful number, since it uses less digits than its factorization.

123302212221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65908240 (or 65908231 counting only the distinct ones).

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

Adding to 123302212221020 its reverse (20122212203321), we get a palindrome (143424424424341).

The spelling of 123302212221020 in words is "one hundred twenty-three trillion, three hundred two billion, two hundred twelve million, two hundred twenty-one thousand, twenty".