11021020231 has 8 divisors (see below), whose sum is σ = 11892394080. Its totient is φ = 10153018272.

The previous prime is 11021020229. The next prime is 11021020259. The reversal of 11021020231 is 13202012011.

11021020231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11021020231 - 2¹ = 11021020229 is a prime.

It is a super-2 number, since 2×11021020231² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021020201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 836176 + ... + 849253.

It is an arithmetic number, because the mean of its divisors is an integer number (1486549260).

Almost surely, 2^11021020231 is an apocalyptic number.

11021020231 is a deficient number, since it is larger than the sum of its proper divisors (871373849).

11021020231 is a wasteful number, since it uses less digits than its factorization.

11021020231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1685945.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 11021020231 its reverse (13202012011), we get a palindrome (24223032242).

The spelling of 11021020231 in words is "eleven billion, twenty-one million, twenty thousand, two hundred thirty-one".