22011111021011 has 4 divisors (see below), whose sum is σ = 25155555452592. Its totient is φ = 18866666589432.

The previous prime is 22011111020953. The next prime is 22011111021073. The reversal of 22011111021011 is 11012011111022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22011111021011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22011111024011) 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, 1572222215780 + ... + 1572222215793.

It is an arithmetic number, because the mean of its divisors is an integer number (6288888863148).

Almost surely, 2^{22011111021011} is an apocalyptic number.

22011111021011 is a deficient number, since it is larger than the sum of its proper divisors (3144444431581).

22011111021011 is an equidigital number, since it uses as much as digits as its factorization.

22011111021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3144444431580.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 22011111021011 its reverse (11012011111022), we get a palindrome (33023122132033).

The spelling of 22011111021011 in words is "twenty-two trillion, eleven billion, one hundred eleven million, twenty-one thousand, eleven".