12121112001111 has 8 divisors (see below), whose sum is σ = 16161623374704. Its totient is φ = 8080670980800.

The previous prime is 12121112001107. The next prime is 12121112001181. The reversal of 12121112001111 is 11110021112121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12121112001111 - 2² = 12121112001107 is a prime.

It is a super-2 number, since 2×12121112001111² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121112001181) 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, 17184990 + ... + 17876411.

It is an arithmetic number, because the mean of its divisors is an integer number (2020202921838).

Almost surely, 2^{12121112001111} is an apocalyptic number.

12121112001111 is a deficient number, since it is larger than the sum of its proper divisors (4040511373593).

12121112001111 is a wasteful number, since it uses less digits than its factorization.

12121112001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35176641.

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

Adding to 12121112001111 its reverse (11110021112121), we get a palindrome (23231133113232).

The spelling of 12121112001111 in words is "twelve trillion, one hundred twenty-one billion, one hundred twelve million, one thousand, one hundred eleven".