12210021121111 has 16 divisors (see below), whose sum is σ = 13365151423488. Its totient is φ = 11062472940000.

The previous prime is 12210021121079. The next prime is 12210021121127. The reversal of 12210021121111 is 11112112001221.

It is a cyclic number.

It is not a de Polignac number, because 12210021121111 - 2⁵ = 12210021121079 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 (12210021122111) 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, 2505621 + ... + 5540593.

It is an arithmetic number, because the mean of its divisors is an integer number (835321963968).

Almost surely, 2^{12210021121111} is an apocalyptic number.

12210021121111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12210021121111 is a deficient number, since it is larger than the sum of its proper divisors (1155130302377).

12210021121111 is a wasteful number, since it uses less digits than its factorization.

12210021121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3036222.

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

Adding to 12210021121111 its reverse (11112112001221), we get a palindrome (23322133122332).

The spelling of 12210021121111 in words is "twelve trillion, two hundred ten billion, twenty-one million, one hundred twenty-one thousand, one hundred eleven".