1212101102111 has 4 divisors (see below), whose sum is σ = 1224102103224. Its totient is φ = 1200100101000.

The previous prime is 1212101102101. The next prime is 1212101102119. The reversal of 1212101102111 is 1112011012121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1212101102111 - 2³⁰ = 1211027360287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212101102119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6000500405 + ... + 6000500606.

It is an arithmetic number, because the mean of its divisors is an integer number (306025525806).

Almost surely, 2^{1212101102111} is an apocalyptic number.

1212101102111 is a deficient number, since it is larger than the sum of its proper divisors (12001001113).

1212101102111 is a wasteful number, since it uses less digits than its factorization.

1212101102111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12001001112.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1212101102111 its reverse (1112011012121), we get a palindrome (2324112114232).

The spelling of 1212101102111 in words is "one trillion, two hundred twelve billion, one hundred one million, one hundred two thousand, one hundred eleven".