121212102002111 has 8 divisors (see below), whose sum is σ = 128457124707600. Its totient is φ = 113979845858688.

The previous prime is 121212102002093. The next prime is 121212102002143. The reversal of 121212102002111 is 111200201212121.

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 121212102002111 - 2²² = 121212097807807 is a prime.

It is a super-2 number, since 2×121212102002111² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121212102002111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121212102002171) 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, 3191620961 + ... + 3191658938.

It is an arithmetic number, because the mean of its divisors is an integer number (16057140588450).

Almost surely, 2^{121212102002111} is an apocalyptic number.

121212102002111 is a deficient number, since it is larger than the sum of its proper divisors (7245022705489).

121212102002111 is a wasteful number, since it uses less digits than its factorization.

121212102002111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6383281033.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121212102002111 its reverse (111200201212121), we get a palindrome (232412303214232).

The spelling of 121212102002111 in words is "one hundred twenty-one trillion, two hundred twelve billion, one hundred two million, two thousand, one hundred eleven".