12120022100000 has 288 divisors, whose sum is σ = 31824854328960. Its totient is φ = 4529882880000.

The previous prime is 12120022099919. The next prime is 12120022100059. The reversal of 12120022100000 is 122002121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 138656309 + ... + 138743691.

It is an arithmetic number, because the mean of its divisors is an integer number (110502966420).

Almost surely, 2^{12120022100000} is an apocalyptic number.

12120022100000 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 12120022100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15912427164480).

12120022100000 is an abundant number, since it is smaller than the sum of its proper divisors (19704832228960).

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

12120022100000 is an frugal number, since it uses more digits than its factorization.

12120022100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87510 (or 87482 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12120022100000 its reverse (122002121), we get a palindrome (12120144102121).

The spelling of 12120022100000 in words is "twelve trillion, one hundred twenty billion, twenty-two million, one hundred thousand".