22001001111 has 8 divisors (see below), whose sum is σ = 32594075760. Its totient is φ = 14667334056.

The previous prime is 22001001107. The next prime is 22001001157. The reversal of 22001001111 is 11110010022.

It is a happy number.

It is not a de Polignac number, because 22001001111 - 2² = 22001001107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 22001001093 and 22001001102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001001311) 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 7 ways as a sum of consecutive naturals, for example, 407425920 + ... + 407425973.

It is an arithmetic number, because the mean of its divisors is an integer number (4074259470).

Almost surely, 2^22001001111 is an apocalyptic number.

22001001111 is a deficient number, since it is larger than the sum of its proper divisors (10593074649).

22001001111 is an equidigital number, since it uses as much as digits as its factorization.

22001001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814851902 (or 814851896 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 22001001111 its reverse (11110010022), we get a palindrome (33111011133).

It can be divided in two parts, 220010011 and 11, that added together give a palindrome (220010022).

The spelling of 22001001111 in words is "twenty-two billion, one million, one thousand, one hundred eleven".