123021012004 has 12 divisors (see below), whose sum is σ = 234858295728. Its totient is φ = 55918641800.

The previous prime is 123021011983. The next prime is 123021012007. The reversal of 123021012004 is 400210120321.

It is not an unprimeable number, because it can be changed into a prime (123021012007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1397966002 + ... + 1397966089.

It is an arithmetic number, because the mean of its divisors is an integer number (19571524644).

Almost surely, 2^123021012004 is an apocalyptic number.

It is an amenable number.

123021012004 is a deficient number, since it is larger than the sum of its proper divisors (111837283724).

123021012004 is a wasteful number, since it uses less digits than its factorization.

123021012004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2795932106 (or 2795932104 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 123021012004 its reverse (400210120321), we get a palindrome (523231132325).

The spelling of 123021012004 in words is "one hundred twenty-three billion, twenty-one million, twelve thousand, four".