11012011212221 has 8 divisors (see below), whose sum is σ = 11294088228864. Its totient is φ = 10732686166800.

The previous prime is 11012011212199. The next prime is 11012011212227. The reversal of 11012011212221 is 12221211021011.

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 11012011212221 - 2³⁴ = 10994831343037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11012011212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012011212227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687984701 + ... + 688000706.

It is an arithmetic number, because the mean of its divisors is an integer number (1411761028608).

Almost surely, 2^{11012011212221} is an apocalyptic number.

It is an amenable number.

11012011212221 is a deficient number, since it is larger than the sum of its proper divisors (282077016643).

11012011212221 is a wasteful number, since it uses less digits than its factorization.

11012011212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375985611.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11012011212221 its reverse (12221211021011), we get a palindrome (23233222233232).

The spelling of 11012011212221 in words is "eleven trillion, twelve billion, eleven million, two hundred twelve thousand, two hundred twenty-one".