11202311101221 has 12 divisors (see below), whose sum is σ = 16185688309440. Its totient is φ = 7466097120360.

The previous prime is 11202311101187. The next prime is 11202311101237. The reversal of 11202311101221 is 12210111320211.

It is a happy number.

11202311101221 is a `hidden beast` number, since 1 + 120 + 2 + 311 + 10 + 1 + 221 = 666.

It is not a de Polignac number, because 11202311101221 - 2¹⁸ = 11202310839077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11202311101194 and 11202311101203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11202311141221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175823085 + ... + 175886786.

It is an arithmetic number, because the mean of its divisors is an integer number (1348807359120).

Almost surely, 2^{11202311101221} is an apocalyptic number.

It is an amenable number.

11202311101221 is a deficient number, since it is larger than the sum of its proper divisors (4983377208219).

11202311101221 is a wasteful number, since it uses less digits than its factorization.

11202311101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351713416 (or 351713413 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 11202311101221 its reverse (12210111320211), we get a palindrome (23412422421432).

The spelling of 11202311101221 in words is "eleven trillion, two hundred two billion, three hundred eleven million, one hundred one thousand, two hundred twenty-one".