11021033231 has 16 divisors (see below), whose sum is σ = 12582812928. Its totient is φ = 9578995200.

The previous prime is 11021033209. The next prime is 11021033321. The reversal of 11021033231 is 13233012011.

It is a cyclic number.

It is not a de Polignac number, because 11021033231 - 2¹⁴ = 11021016847 is a prime.

It is a super-2 number, since 2×11021033231² (a number of 21 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 (11021033131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 354650 + ... + 384471.

It is an arithmetic number, because the mean of its divisors is an integer number (786425808).

Almost surely, 2^11021033231 is an apocalyptic number.

11021033231 is a deficient number, since it is larger than the sum of its proper divisors (1561779697).

11021033231 is a wasteful number, since it uses less digits than its factorization.

11021033231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739202.

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

Adding to 11021033231 its reverse (13233012011), we get a palindrome (24254045242).

The spelling of 11021033231 in words is "eleven billion, twenty-one million, thirty-three thousand, two hundred thirty-one".