11221641104721 has 8 divisors (see below), whose sum is σ = 14963115976704. Its totient is φ = 7480630151280.

The previous prime is 11221641104717. The next prime is 11221641104753. The reversal of 11221641104721 is 12740114612211.

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

It is not a de Polignac number, because 11221641104721 - 2² = 11221641104717 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11221641104761) 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, 115923190 + ... + 116019951.

It is an arithmetic number, because the mean of its divisors is an integer number (1870389497088).

Almost surely, 2^{11221641104721} is an apocalyptic number.

It is an amenable number.

11221641104721 is a deficient number, since it is larger than the sum of its proper divisors (3741474871983).

11221641104721 is a wasteful number, since it uses less digits than its factorization.

11221641104721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231959271.

The product of its (nonzero) digits is 5376, while the sum is 33.

Adding to 11221641104721 its reverse (12740114612211), we get a palindrome (23961755716932).

The spelling of 11221641104721 in words is "eleven trillion, two hundred twenty-one billion, six hundred forty-one million, one hundred four thousand, seven hundred twenty-one".