12121101112011 has 16 divisors (see below), whose sum is σ = 16436310912000. Its totient is φ = 7943328019808.

The previous prime is 12121101112009. The next prime is 12121101112019. The reversal of 12121101112011 is 11021110112121.

It is a cyclic number.

It is not a de Polignac number, because 12121101112011 - 2¹ = 12121101112009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12121101112019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1271590 + ... + 5085188.

It is an arithmetic number, because the mean of its divisors is an integer number (1027269432000).

Almost surely, 2^{12121101112011} is an apocalyptic number.

12121101112011 is a deficient number, since it is larger than the sum of its proper divisors (4315209799989).

12121101112011 is a wasteful number, since it uses less digits than its factorization.

12121101112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3831618.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 12121101112011 its reverse (11021110112121), we get a palindrome (23142211224132).

The spelling of 12121101112011 in words is "twelve trillion, one hundred twenty-one billion, one hundred one million, one hundred twelve thousand, eleven".