11111122021011 has 8 divisors (see below), whose sum is σ = 14863086135744. Its totient is φ = 7383286293480.

The previous prime is 11111122021007. The next prime is 11111122021033. The reversal of 11111122021011 is 11012022111111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11111122021011 - 2² = 11111122021007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11111122028011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6032095725 + ... + 6032097566.

It is an arithmetic number, because the mean of its divisors is an integer number (1857885766968).

Almost surely, 2^{11111122021011} is an apocalyptic number.

11111122021011 is a deficient number, since it is larger than the sum of its proper divisors (3751964114733).

11111122021011 is a wasteful number, since it uses less digits than its factorization.

11111122021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12064193601.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11111122021011 its reverse (11012022111111), we get a palindrome (22123144132122).

The spelling of 11111122021011 in words is "eleven trillion, one hundred eleven billion, one hundred twenty-two million, twenty-one thousand, eleven".