20220111221111 has 12 divisors (see below), whose sum is σ = 20701738251432. Its totient is φ = 19749440861136.

The previous prime is 20220111221087. The next prime is 20220111221153. The reversal of 20220111221111 is 11112211102202.

It is a de Polignac number, because none of the positive numbers 2^k-20220111221111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20220111221111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220111229111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112027640 + ... + 112207986.

It is an arithmetic number, because the mean of its divisors is an integer number (1725144854286).

Almost surely, 2^{20220111221111} is an apocalyptic number.

20220111221111 is a deficient number, since it is larger than the sum of its proper divisors (481627030321).

20220111221111 is an equidigital number, since it uses as much as digits as its factorization.

20220111221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241070 (or 241027 counting only the distinct ones).

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

Adding to 20220111221111 its reverse (11112211102202), we get a palindrome (31332322323313).

The spelling of 20220111221111 in words is "twenty trillion, two hundred twenty billion, one hundred eleven million, two hundred twenty-one thousand, one hundred eleven".