123122100012220 has 96 divisors (see below), whose sum is σ = 270008613084672. Its totient is φ = 47070826015488.

The previous prime is 123122100012181. The next prime is 123122100012251. The reversal of 123122100012220 is 22210001221321.

It is a super-2 number, since 2×123122100012220² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3356361999 + ... + 3356398681.

It is an arithmetic number, because the mean of its divisors is an integer number (2812589719632).

Almost surely, 2^{123122100012220} is an apocalyptic number.

123122100012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123122100012220 is an abundant number, since it is smaller than the sum of its proper divisors (146886513072452).

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

123122100012220 is a wasteful number, since it uses less digits than its factorization.

123122100012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42211 (or 42209 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 123122100012220 its reverse (22210001221321), we get a palindrome (145332101233541).

The spelling of 123122100012220 in words is "one hundred twenty-three trillion, one hundred twenty-two billion, one hundred million, twelve thousand, two hundred twenty".