12101200000000 has 198 divisors, whose sum is σ = 30239212056578. Its totient is φ = 4840320000000.

The previous prime is 12101199999961. The next prime is 12101200000037. The reversal of 12101200000000 is 210121.

It can be written as a sum of positive squares in 9 ways, for example, as 7419827332096 + 4681372667904 = 2723936^2 + 2163648^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 399984874 + ... + 400015126.

Almost surely, 2^{12101200000000} is an apocalyptic number.

12101200000000 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 12101200000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15119606028289).

12101200000000 is an abundant number, since it is smaller than the sum of its proper divisors (18138012056578).

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

12101200000000 is an frugal number, since it uses more digits than its factorization.

12101200000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30313 (or 30260 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 12101200000000 its reverse (210121), we get a palindrome (12101200210121).

The spelling of 12101200000000 in words is "twelve trillion, one hundred one billion, two hundred million", and thus it is an aban number.