11212023031221 has 32 divisors (see below), whose sum is σ = 15695387504640. Its totient is φ = 7105768084800.

The previous prime is 11212023031199. The next prime is 11212023031247. The reversal of 11212023031221 is 12213032021211.

It is not a de Polignac number, because 11212023031221 - 2²⁶ = 11211955922357 is a prime.

It is a super-2 number, since 2×11212023031221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212023031291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9779236 + ... + 10865426.

It is an arithmetic number, because the mean of its divisors is an integer number (490480859520).

Almost surely, 2^{11212023031221} is an apocalyptic number.

It is an amenable number.

11212023031221 is a deficient number, since it is larger than the sum of its proper divisors (4483364473419).

11212023031221 is a wasteful number, since it uses less digits than its factorization.

11212023031221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087137.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 11212023031221 its reverse (12213032021211), we get a palindrome (23425055052432).

The spelling of 11212023031221 in words is "eleven trillion, two hundred twelve billion, twenty-three million, thirty-one thousand, two hundred twenty-one".