12211112022111 has 24 divisors (see below), whose sum is σ = 18677403710784. Its totient is φ = 7661223820800.

The previous prime is 12211112022107. The next prime is 12211112022133. The reversal of 12211112022111 is 11122021111221.

It is a happy number.

It is not a de Polignac number, because 12211112022111 - 2² = 12211112022107 is a prime.

It is a super-2 number, since 2×12211112022111² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211112022191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1575991 + ... + 5187096.

It is an arithmetic number, because the mean of its divisors is an integer number (778225154616).

Almost surely, 2^{12211112022111} is an apocalyptic number.

12211112022111 is a deficient number, since it is larger than the sum of its proper divisors (6466291688673).

12211112022111 is a wasteful number, since it uses less digits than its factorization.

12211112022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6774911 (or 6774908 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 12211112022111 its reverse (11122021111221), we get a palindrome (23333133133332).

The spelling of 12211112022111 in words is "twelve trillion, two hundred eleven billion, one hundred twelve million, twenty-two thousand, one hundred eleven".