12001212202111 has 16 divisors (see below), whose sum is σ = 13119711909408. Its totient is φ = 10887312592000.

The previous prime is 12001212202069. The next prime is 12001212202121. The reversal of 12001212202111 is 11120221210021.

It is a cyclic number.

It is not a de Polignac number, because 12001212202111 - 2⁴³ = 3205119179903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001212202121) 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, 11512461 + ... + 12511561.

It is an arithmetic number, because the mean of its divisors is an integer number (819981994338).

Almost surely, 2^{12001212202111} is an apocalyptic number.

12001212202111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12001212202111 is a deficient number, since it is larger than the sum of its proper divisors (1118499707297).

12001212202111 is a wasteful number, since it uses less digits than its factorization.

12001212202111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001402.

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

Adding to 12001212202111 its reverse (11120221210021), we get a palindrome (23121433412132).

The spelling of 12001212202111 in words is "twelve trillion, one billion, two hundred twelve million, two hundred two thousand, one hundred eleven".