12101222021200 has 60 divisors (see below), whose sum is σ = 31309584835228. Its totient is φ = 4468143513600.

The previous prime is 12101222021113. The next prime is 12101222021201. The reversal of 12101222021200 is 212022210121.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 675376144 + 12100546645056 = 25988^2 + 3478584^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101222021201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1163573841 + ... + 1163584240.

Almost surely, 2^{12101222021200} is an apocalyptic number.

12101222021200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12101222021200 is an abundant number, since it is smaller than the sum of its proper divisors (19208362814028).

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

12101222021200 is a wasteful number, since it uses less digits than its factorization.

12101222021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2327158112 (or 2327158101 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12101222021200 its reverse (212022210121), we get a palindrome (12313244231321).

The spelling of 12101222021200 in words is "twelve trillion, one hundred one billion, two hundred twenty-two million, twenty-one thousand, two hundred".