11221110021001 has 8 divisors (see below), whose sum is σ = 11883481090344. Its totient is φ = 10558995148800.

The previous prime is 11221110020983. The next prime is 11221110021061. The reversal of 11221110021001 is 10012001112211.

It is a happy number.

11221110021001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 726756250000 + 10494353771001 = 852500^2 + 3239499^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11221110021001 - 2¹¹ = 11221110018953 is a prime.

It is a super-2 number, since 2×11221110021001² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11221110021061) 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, 63959100 + ... + 64134301.

It is an arithmetic number, because the mean of its divisors is an integer number (1485435136293).

Almost surely, 2^{11221110021001} is an apocalyptic number.

It is an amenable number.

11221110021001 is a deficient number, since it is larger than the sum of its proper divisors (662371069343).

11221110021001 is a wasteful number, since it uses less digits than its factorization.

11221110021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128098571.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11221110021001 its reverse (10012001112211), we get a palindrome (21233111133212).

The spelling of 11221110021001 in words is "eleven trillion, two hundred twenty-one billion, one hundred ten million, twenty-one thousand, one".