12102121122011 has 4 divisors (see below), whose sum is σ = 12247929810312. Its totient is φ = 11956312433712.

The previous prime is 12102121121983. The next prime is 12102121122029. The reversal of 12102121122011 is 11022112120121.

12102121122011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12102121122011 - 2⁶ = 12102121121947 is a prime.

It is a super-2 number, since 2×12102121122011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12102121122031) 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, 72904344026 + ... + 72904344191.

It is an arithmetic number, because the mean of its divisors is an integer number (3061982452578).

Almost surely, 2^{12102121122011} is an apocalyptic number.

12102121122011 is a deficient number, since it is larger than the sum of its proper divisors (145808688301).

12102121122011 is an equidigital number, since it uses as much as digits as its factorization.

12102121122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145808688300.

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

Adding to 12102121122011 its reverse (11022112120121), we get a palindrome (23124233242132).

The spelling of 12102121122011 in words is "twelve trillion, one hundred two billion, one hundred twenty-one million, one hundred twenty-two thousand, eleven".