123021444004 has 24 divisors (see below), whose sum is σ = 225810506880. Its totient is φ = 58574899296.

The previous prime is 123021443939. The next prime is 123021444037. The reversal of 123021444004 is 400444120321.

It is a self number, because there is not a number n which added to its sum of digits gives 123021444004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8835874 + ... + 8849785.

It is an arithmetic number, because the mean of its divisors is an integer number (9408771120).

Almost surely, 2^123021444004 is an apocalyptic number.

It is an amenable number.

123021444004 is a deficient number, since it is larger than the sum of its proper divisors (102789062876).

123021444004 is a wasteful number, since it uses less digits than its factorization.

123021444004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17685747 (or 17685745 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 123021444004 its reverse (400444120321), we get a palindrome (523465564325).

The spelling of 123021444004 in words is "one hundred twenty-three billion, twenty-one million, four hundred forty-four thousand, four".