11221120031211 has 16 divisors (see below), whose sum is σ = 16682623169920. Its totient is φ = 7454312948520.

The previous prime is 11221120031201. The next prime is 11221120031273. The reversal of 11221120031211 is 11213002112211.

It is a happy number.

11221120031211 is a `hidden beast` number, since 1 + 1 + 221 + 1 + 200 + 31 + 211 = 666.

It is not a de Polignac number, because 11221120031211 - 2⁹ = 11221120030699 is a prime.

It is a super-2 number, since 2×11221120031211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221120031201) 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, 734262745 + ... + 734278026.

It is an arithmetic number, because the mean of its divisors is an integer number (1042663948120).

Almost surely, 2^{11221120031211} is an apocalyptic number.

11221120031211 is a deficient number, since it is larger than the sum of its proper divisors (5461503138709).

11221120031211 is a wasteful number, since it uses less digits than its factorization.

11221120031211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468541063 (or 1468541057 counting only the distinct ones).

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

Adding to 11221120031211 its reverse (11213002112211), we get a palindrome (22434122143422).

The spelling of 11221120031211 in words is "eleven trillion, two hundred twenty-one billion, one hundred twenty million, thirty-one thousand, two hundred eleven".