11023012221 has 8 divisors (see below), whose sum is σ = 15827915040. Its totient is φ = 6783392112.

The previous prime is 11023012219. The next prime is 11023012249. The reversal of 11023012221 is 12221032011.

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

It is not a de Polignac number, because 11023012221 - 2¹ = 11023012219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11023012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11023012261) 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, 141320631 + ... + 141320708.

It is an arithmetic number, because the mean of its divisors is an integer number (1978489380).

Almost surely, 2^11023012221 is an apocalyptic number.

It is an amenable number.

11023012221 is a deficient number, since it is larger than the sum of its proper divisors (4804902819).

11023012221 is a wasteful number, since it uses less digits than its factorization.

11023012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282641355.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 11023012221 its reverse (12221032011), we get a palindrome (23244044232).

The spelling of 11023012221 in words is "eleven billion, twenty-three million, twelve thousand, two hundred twenty-one".