12101021021212 has 12 divisors (see below), whose sum is σ = 21177578363760. Its totient is φ = 6050284345856.

The previous prime is 12101021021189. The next prime is 12101021021261. The reversal of 12101021021212 is 21212012010121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56420773 + ... + 56634844.

It is an arithmetic number, because the mean of its divisors is an integer number (1764798196980).

Almost surely, 2^{12101021021212} is an apocalyptic number.

It is an amenable number.

12101021021212 is a deficient number, since it is larger than the sum of its proper divisors (9076557342548).

12101021021212 is a wasteful number, since it uses less digits than its factorization.

12101021021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113082380 (or 113082378 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12101021021212 its reverse (21212012010121), we get a palindrome (33313033031333).

The spelling of 12101021021212 in words is "twelve trillion, one hundred one billion, twenty-one million, twenty-one thousand, two hundred twelve".