123044220103440 has 80 divisors (see below), whose sum is σ = 381515393702016. Its totient is φ = 32805055564800.

The previous prime is 123044220103433. The next prime is 123044220103481. The reversal of 123044220103440 is 44301022440321.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 123044220103398 and 123044220103407.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51457141 + ... + 53795220.

Almost surely, 2^{123044220103440} is an apocalyptic number.

123044220103440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123044220103440 is an abundant number, since it is smaller than the sum of its proper divisors (258471173598576).

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

123044220103440 is a wasteful number, since it uses less digits than its factorization.

123044220103440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105257248 (or 105257242 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 123044220103440 its reverse (44301022440321), we get a palindrome (167345242543761).

The spelling of 123044220103440 in words is "one hundred twenty-three trillion, forty-four billion, two hundred twenty million, one hundred three thousand, four hundred forty".