11011022101221 has 8 divisors (see below), whose sum is σ = 14681890507104. Its totient is φ = 7340417548080.

The previous prime is 11011022101213. The next prime is 11011022101231. The reversal of 11011022101221 is 12210122011011.

It is a happy number.

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

It is not a de Polignac number, because 11011022101221 - 2³ = 11011022101213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11011022101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011022101231) 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, 65865790 + ... + 66032751.

It is an arithmetic number, because the mean of its divisors is an integer number (1835236313388).

Almost surely, 2^{11011022101221} is an apocalyptic number.

It is an amenable number.

11011022101221 is a deficient number, since it is larger than the sum of its proper divisors (3670868405883).

11011022101221 is a wasteful number, since it uses less digits than its factorization.

11011022101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131926371.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11011022101221 its reverse (12210122011011), we get a palindrome (23221144112232).

The spelling of 11011022101221 in words is "eleven trillion, eleven billion, twenty-two million, one hundred one thousand, two hundred twenty-one".