11231021033 has 4 divisors (see below), whose sum is σ = 11534562180. Its totient is φ = 10927479888.

The previous prime is 11231020951. The next prime is 11231021057. The reversal of 11231021033 is 33012013211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6610828249 + 4620192784 = 81307^2 + 67972^2 .

It is a cyclic number.

It is not a de Polignac number, because 11231021033 - 2²² = 11226826729 is a prime.

It is a super-2 number, since 2×11231021033² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11231021833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151770518 + ... + 151770591.

It is an arithmetic number, because the mean of its divisors is an integer number (2883640545).

Almost surely, 2^11231021033 is an apocalyptic number.

It is an amenable number.

11231021033 is a deficient number, since it is larger than the sum of its proper divisors (303541147).

11231021033 is an equidigital number, since it uses as much as digits as its factorization.

11231021033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303541146.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 11231021033 its reverse (33012013211), we get a palindrome (44243034244).

The spelling of 11231021033 in words is "eleven billion, two hundred thirty-one million, twenty-one thousand, thirty-three".