123133021000 has 64 divisors (see below), whose sum is σ = 314325048960. Its totient is φ = 44775640000.

The previous prime is 123133020973. The next prime is 123133021001. The reversal of 123133021000 is 120331321.

It is not an unprimeable number, because it can be changed into a prime (123133021001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5585956 + ... + 5607955.

It is an arithmetic number, because the mean of its divisors is an integer number (4911328890).

Almost surely, 2^123133021000 is an apocalyptic number.

123133021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123133021000 is an abundant number, since it is smaller than the sum of its proper divisors (191192027960).

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

123133021000 is a wasteful number, since it uses less digits than its factorization.

123133021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11193943 (or 11193929 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 123133021000 its reverse (120331321), we get a palindrome (123253352321).

The spelling of 123133021000 in words is "one hundred twenty-three billion, one hundred thirty-three million, twenty-one thousand".