11101122221001 has 64 divisors (see below), whose sum is σ = 16029030850560. Its totient is φ = 6810905088000.

The previous prime is 11101122220999. The next prime is 11101122221087. The reversal of 11101122221001 is 10012222110111.

It is a happy number.

It is not a de Polignac number, because 11101122221001 - 2¹ = 11101122220999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11101122221201) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1317949276 + ... + 1317957698.

It is an arithmetic number, because the mean of its divisors is an integer number (250453607040).

Almost surely, 2^{11101122221001} is an apocalyptic number.

It is an amenable number.

11101122221001 is a deficient number, since it is larger than the sum of its proper divisors (4927908629559).

11101122221001 is a wasteful number, since it uses less digits than its factorization.

11101122221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10838.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11101122221001 its reverse (10012222110111), we get a palindrome (21113344331112).

The spelling of 11101122221001 in words is "eleven trillion, one hundred one billion, one hundred twenty-two million, two hundred twenty-one thousand, one".