13123210021000 has 64 divisors (see below), whose sum is σ = 30862625040000. Its totient is φ = 5222905617600.

The previous prime is 13123210020971. The next prime is 13123210021001. The reversal of 13123210021000 is 12001232131.

13123210021000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13123210021001) 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, 32773890 + ... + 33171889.

It is an arithmetic number, because the mean of its divisors is an integer number (482228516250).

Almost surely, 2^{13123210021000} is an apocalyptic number.

13123210021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13123210021000 is an abundant number, since it is smaller than the sum of its proper divisors (17739415019000).

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

13123210021000 is a wasteful number, since it uses less digits than its factorization.

13123210021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65945999 (or 65945985 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 13123210021000 its reverse (12001232131), we get a palindrome (13135211253131).

The spelling of 13123210021000 in words is "thirteen trillion, one hundred twenty-three billion, two hundred ten million, twenty-one thousand".