11030031331221 has 16 divisors (see below), whose sum is σ = 17150680400000. Its totient is φ = 6302875045824.

The previous prime is 11030031331199. The next prime is 11030031331243. The reversal of 11030031331221 is 12213313003011.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11030031331199) and next prime (11030031331243).

It is not a de Polignac number, because 11030031331221 - 2¹⁵ = 11030031298453 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11030031331271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5359586596 + ... + 5359588653.

It is an arithmetic number, because the mean of its divisors is an integer number (1071917525000).

Almost surely, 2^{11030031331221} is an apocalyptic number.

It is an amenable number.

11030031331221 is a deficient number, since it is larger than the sum of its proper divisors (6120649068779).

11030031331221 is an equidigital number, since it uses as much as digits as its factorization.

11030031331221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10719175273 (or 10719175259 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 11030031331221 its reverse (12213313003011), we get a palindrome (23243344334232).

The spelling of 11030031331221 in words is "eleven trillion, thirty billion, thirty-one million, three hundred thirty-one thousand, two hundred twenty-one".