22011101011111 has 4 divisors (see below), whose sum is σ = 22184416767232. Its totient is φ = 21837785254992.

The previous prime is 22011101011091. The next prime is 22011101011243. The reversal of 22011101011111 is 11111010111022.

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 22011101011111 - 2⁹ = 22011101010599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22011101011091 and 22011101011100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011101018111) 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, 86657877870 + ... + 86657878123.

It is an arithmetic number, because the mean of its divisors is an integer number (5546104191808).

Almost surely, 2^{22011101011111} is an apocalyptic number.

22011101011111 is a deficient number, since it is larger than the sum of its proper divisors (173315756121).

22011101011111 is a wasteful number, since it uses less digits than its factorization.

22011101011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173315756120.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 22011101011111 its reverse (11111010111022), we get a palindrome (33122111122133).

The spelling of 22011101011111 in words is "twenty-two trillion, eleven billion, one hundred one million, eleven thousand, one hundred eleven".