123321019000 has 64 divisors (see below), whose sum is σ = 288712700640. Its totient is φ = 49304217600.

The previous prime is 123321018943. The next prime is 123321019001. The reversal of 123321019000 is 910123321.

It is a super-2 number, since 2×123321019000² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123321019001) 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, 2083819 + ... + 2142181.

Almost surely, 2^123321019000 is an apocalyptic number.

123321019000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123321019000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144356350320).

123321019000 is an abundant number, since it is smaller than the sum of its proper divisors (165391681640).

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

123321019000 is a wasteful number, since it uses less digits than its factorization.

123321019000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60497 (or 60483 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

The spelling of 123321019000 in words is "one hundred twenty-three billion, three hundred twenty-one million, nineteen thousand".