12220021211111 has 4 divisors (see below), whose sum is σ = 13965738526992. Its totient is φ = 10474303895232.

The previous prime is 12220021211107. The next prime is 12220021211143. The reversal of 12220021211111 is 11111212002221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12220021211111 - 2² = 12220021211107 is a prime.

It is a super-3 number, since 3×12220021211111³ (a number of 40 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12220021211111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220021211171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 872858657930 + ... + 872858657943.

It is an arithmetic number, because the mean of its divisors is an integer number (3491434631748).

Almost surely, 2^{12220021211111} is an apocalyptic number.

12220021211111 is a deficient number, since it is larger than the sum of its proper divisors (1745717315881).

12220021211111 is an equidigital number, since it uses as much as digits as its factorization.

12220021211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745717315880.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12220021211111 its reverse (11111212002221), we get a palindrome (23331233213332).

The spelling of 12220021211111 in words is "twelve trillion, two hundred twenty billion, twenty-one million, two hundred eleven thousand, one hundred eleven".