12121102102111 has 4 divisors (see below), whose sum is σ = 12232304873800. Its totient is φ = 12009899330424.

The previous prime is 12121102102097. The next prime is 12121102102121. The reversal of 12121102102111 is 11120120112121.

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 12121102102111 - 2²⁷ = 12120967884383 is a prime.

It is a super-2 number, since 2×12121102102111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121102102121) 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, 55601385681 + ... + 55601385898.

It is an arithmetic number, because the mean of its divisors is an integer number (3058076218450).

Almost surely, 2^{12121102102111} is an apocalyptic number.

12121102102111 is a deficient number, since it is larger than the sum of its proper divisors (111202771689).

12121102102111 is a wasteful number, since it uses less digits than its factorization.

12121102102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111202771688.

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

Adding to 12121102102111 its reverse (11120120112121), we get a palindrome (23241222214232).

The spelling of 12121102102111 in words is "twelve trillion, one hundred twenty-one billion, one hundred two million, one hundred two thousand, one hundred eleven".