11021123221231 has 8 divisors (see below), whose sum is σ = 11196948334320. Its totient is φ = 10846567603968.

The previous prime is 11021123221181. The next prime is 11021123221237. The reversal of 11021123221231 is 13212232112011.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11021123221231 - 2¹⁵ = 11021123188463 is a prime.

It is a super-2 number, since 2×11021123221231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021123221237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317356456 + ... + 317391181.

It is an arithmetic number, because the mean of its divisors is an integer number (1399618541790).

Almost surely, 2^{11021123221231} is an apocalyptic number.

11021123221231 is a deficient number, since it is larger than the sum of its proper divisors (175825113089).

11021123221231 is an equidigital number, since it uses as much as digits as its factorization.

11021123221231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634747913.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 11021123221231 its reverse (13212232112011), we get a palindrome (24233355333242).

The spelling of 11021123221231 in words is "eleven trillion, twenty-one billion, one hundred twenty-three million, two hundred twenty-one thousand, two hundred thirty-one".