121212110200111 has 8 divisors (see below), whose sum is σ = 138562137300384. Its totient is φ = 103870585939200.

The previous prime is 121212110200091. The next prime is 121212110200127. The reversal of 121212110200111 is 111002011212121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121212110200111 - 2⁵ = 121212110200079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121212110200211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2125679290 + ... + 2125736311.

It is an arithmetic number, because the mean of its divisors is an integer number (17320267162548).

Almost surely, 2^{121212110200111} is an apocalyptic number.

121212110200111 is a deficient number, since it is larger than the sum of its proper divisors (17350027100273).

121212110200111 is an equidigital number, since it uses as much as digits as its factorization.

121212110200111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4251419681.

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

Adding to 121212110200111 its reverse (111002011212121), we get a palindrome (232214121412232).

The spelling of 121212110200111 in words is "one hundred twenty-one trillion, two hundred twelve billion, one hundred ten million, two hundred thousand, one hundred eleven".