22012001111 has 4 divisors (see below), whose sum is σ = 22024516800. Its totient is φ = 21999485424.

The previous prime is 22012001107. The next prime is 22012001131. The reversal of 22012001111 is 11110021022.

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 22012001111 - 2² = 22012001107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22012001092 and 22012001101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012001101) 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, 6255206 + ... + 6258723.

It is an arithmetic number, because the mean of its divisors is an integer number (5506129200).

Almost surely, 2^22012001111 is an apocalyptic number.

22012001111 is a deficient number, since it is larger than the sum of its proper divisors (12515689).

22012001111 is a wasteful number, since it uses less digits than its factorization.

22012001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12515688.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 22012001111 its reverse (11110021022), we get a palindrome (33122022133).

The spelling of 22012001111 in words is "twenty-two billion, twelve million, one thousand, one hundred eleven".