12210021111 has 16 divisors (see below), whose sum is σ = 16346875104. Its totient is φ = 8106630144.

The previous prime is 12210021073. The next prime is 12210021151. The reversal of 12210021111 is 11112001221.

It is not a de Polignac number, because 12210021111 - 2¹⁴ = 12210004727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210021151) 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, 1558075 + ... + 1565891.

It is an arithmetic number, because the mean of its divisors is an integer number (1021679694).

Almost surely, 2^12210021111 is an apocalyptic number.

12210021111 is a deficient number, since it is larger than the sum of its proper divisors (4136853993).

12210021111 is a wasteful number, since it uses less digits than its factorization.

12210021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9890.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12210021111 its reverse (11112001221), we get a palindrome (23322022332).

The spelling of 12210021111 in words is "twelve billion, two hundred ten million, twenty-one thousand, one hundred eleven".