12121200202111 has 96 divisors (see below), whose sum is σ = 16588655677440. Its totient is φ = 8599596595200.

The previous prime is 12121200202103. The next prime is 12121200202117. The reversal of 12121200202111 is 11120200212121.

It is not a de Polignac number, because 12121200202111 - 2³ = 12121200202103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121200202117) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 316287831 + ... + 316326151.

It is an arithmetic number, because the mean of its divisors is an integer number (172798496640).

Almost surely, 2^{12121200202111} is an apocalyptic number.

12121200202111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12121200202111 is a deficient number, since it is larger than the sum of its proper divisors (4467455475329).

12121200202111 is a wasteful number, since it uses less digits than its factorization.

12121200202111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38697 (or 38684 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12121200202111 its reverse (11120200212121), we get a palindrome (23241400414232).

The spelling of 12121200202111 in words is "twelve trillion, one hundred twenty-one billion, two hundred million, two hundred two thousand, one hundred eleven".