123211123210000 has 800 divisors, whose sum is σ = 364501447200000. Its totient is φ = 39372300288000.

The previous prime is 123211123209973. The next prime is 123211123210009. The reversal of 123211123210000 is 12321112321.

It is a self number, because there is not a number n which added to its sum of digits gives 123211123210000.

It is not an unprimeable number, because it can be changed into a prime (123211123210009) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 72519789151 + ... + 72519790849.

It is an arithmetic number, because the mean of its divisors is an integer number (455626809000).

Almost surely, 2^{123211123210000} is an apocalyptic number.

123211123210000 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 123211123210000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182250723600000).

123211123210000 is an abundant number, since it is smaller than the sum of its proper divisors (241290323990000).

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

123211123210000 is a wasteful number, since it uses less digits than its factorization.

123211123210000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2309 (or 2288 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 123211123210000 its reverse (12321112321), we get a palindrome (123223444322321).

123211123210000 divided by its reverse (12321112321) gives a 4-th power (10000 = 10⁴).

The spelling of 123211123210000 in words is "one hundred twenty-three trillion, two hundred eleven billion, one hundred twenty-three million, two hundred ten thousand".