11221211110001 has 8 divisors (see below), whose sum is σ = 11482269742944. Its totient is φ = 10960157033280.

The previous prime is 11221211109989. The next prime is 11221211110009. The reversal of 11221211110001 is 10001111212211.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11221211110001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221211110009) 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, 4123466 + ... + 6280556.

It is an arithmetic number, because the mean of its divisors is an integer number (1435283717868).

Almost surely, 2^{11221211110001} is an apocalyptic number.

It is an amenable number.

11221211110001 is a deficient number, since it is larger than the sum of its proper divisors (261058632943).

11221211110001 is a wasteful number, since it uses less digits than its factorization.

11221211110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2278111.

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

Adding to 11221211110001 its reverse (10001111212211), we get a palindrome (21222322322212).

The spelling of 11221211110001 in words is "eleven trillion, two hundred twenty-one billion, two hundred eleven million, one hundred ten thousand, one".