11210122001221 has 32 divisors (see below), whose sum is σ = 13359534249600. Its totient is φ = 9272630265600.

The previous prime is 11210122001189. The next prime is 11210122001231. The reversal of 11210122001221 is 12210022101211.

It is not a de Polignac number, because 11210122001221 - 2⁵ = 11210122001189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11210122001195 and 11210122001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11210122001231) 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 31 ways as a sum of consecutive naturals, for example, 783111 + ... + 4799323.

It is an arithmetic number, because the mean of its divisors is an integer number (417485445300).

Almost surely, 2^{11210122001221} is an apocalyptic number.

11210122001221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11210122001221 is a deficient number, since it is larger than the sum of its proper divisors (2149412248379).

11210122001221 is a wasteful number, since it uses less digits than its factorization.

11210122001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4016517.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11210122001221 its reverse (12210022101211), we get a palindrome (23420144102432).

The spelling of 11210122001221 in words is "eleven trillion, two hundred ten billion, one hundred twenty-two million, one thousand, two hundred twenty-one".