123030021032 has 32 divisors (see below), whose sum is σ = 231129925320. Its totient is φ = 61395459840.

The previous prime is 123030020989. The next prime is 123030021041. The reversal of 123030021032 is 230120030321.

It can be written as a sum of positive squares in 4 ways, for example, as 48191664676 + 74838356356 = 219526^2 + 273566^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 123030021032.

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, 19229258 + ... + 19235654.

Almost surely, 2^123030021032 is an apocalyptic number.

It is an amenable number.

123030021032 is a deficient number, since it is larger than the sum of its proper divisors (108099904288).

123030021032 is a wasteful number, since it uses less digits than its factorization.

123030021032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10701 (or 10697 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 123030021032 its reverse (230120030321), we get a palindrome (353150051353).

The spelling of 123030021032 in words is "one hundred twenty-three billion, thirty million, twenty-one thousand, thirty-two".