12221012222111 has 32 divisors (see below), whose sum is σ = 15395677710336. Its totient is φ = 9423535680000.

The previous prime is 12221012222099. The next prime is 12221012222119. The reversal of 12221012222111 is 11122221012221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12221012222111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221012222119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14146826 + ... + 14985816.

It is an arithmetic number, because the mean of its divisors is an integer number (481114928448).

Almost surely, 2^{12221012222111} is an apocalyptic number.

12221012222111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12221012222111 is a deficient number, since it is larger than the sum of its proper divisors (3174665488225).

12221012222111 is a wasteful number, since it uses less digits than its factorization.

12221012222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840983.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12221012222111 its reverse (11122221012221), we get a palindrome (23343233234332).

It can be divided in two parts, 122210 and 12222111, that added together give a palindrome (12344321).

The spelling of 12221012222111 in words is "twelve trillion, two hundred twenty-one billion, twelve million, two hundred twenty-two thousand, one hundred eleven".