12111011021012 has 24 divisors (see below), whose sum is σ = 21217756079520. Its totient is φ = 6048795668960.

The previous prime is 12111011020973. The next prime is 12111011021027. The reversal of 12111011021012 is 21012011011121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83676587 + ... + 83821197.

It is an arithmetic number, because the mean of its divisors is an integer number (884073169980).

Almost surely, 2^{12111011021012} is an apocalyptic number.

It is an amenable number.

12111011021012 is a deficient number, since it is larger than the sum of its proper divisors (9106745058508).

12111011021012 is a wasteful number, since it uses less digits than its factorization.

12111011021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167671 (or 167669 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 12111011021012 its reverse (21012011011121), we get a palindrome (33123022032133).

The spelling of 12111011021012 in words is "twelve trillion, one hundred eleven billion, eleven million, twenty-one thousand, twelve".