22001222011111 has 12 divisors (see below), whose sum is σ = 25593921396792. Its totient is φ = 18857701666608.

The previous prime is 22001222011099. The next prime is 22001222011129. The reversal of 22001222011111 is 11111022210022.

It is not a de Polignac number, because 22001222011111 - 2³⁷ = 21863783057639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001222911111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3900220 + ... + 7695073.

It is an arithmetic number, because the mean of its divisors is an integer number (2132826783066).

Almost surely, 2^{22001222011111} is an apocalyptic number.

22001222011111 is a deficient number, since it is larger than the sum of its proper divisors (3592699385681).

22001222011111 is a wasteful number, since it uses less digits than its factorization.

22001222011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11634030 (or 11634023 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 22001222011111 its reverse (11111022210022), we get a palindrome (33112244221133).

The spelling of 22001222011111 in words is "twenty-two trillion, one billion, two hundred twenty-two million, eleven thousand, one hundred eleven".