12111011021212 has 6 divisors (see below), whose sum is σ = 21194269287128. Its totient is φ = 6055505510604.

The previous prime is 12111011021189. The next prime is 12111011021261. The reversal of 12111011021212 is 21212011011121.

It is a super-2 number, since 2×12111011021212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1513876377648 + ... + 1513876377655.

Almost surely, 2^{12111011021212} is an apocalyptic number.

It is an amenable number.

12111011021212 is a deficient number, since it is larger than the sum of its proper divisors (9083258265916).

12111011021212 is a wasteful number, since it uses less digits than its factorization.

12111011021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3027752755307 (or 3027752755305 counting only the distinct ones).

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

Adding to 12111011021212 its reverse (21212011011121), we get a palindrome (33323022032333).

The spelling of 12111011021212 in words is "twelve trillion, one hundred eleven billion, eleven million, twenty-one thousand, two hundred twelve".