21033013011 has 8 divisors (see below), whose sum is σ = 28052747664. Its totient is φ = 14017643520.

The previous prime is 21033012983. The next prime is 21033013039. The reversal of 21033013011 is 11031033012.

It is an interprime number because it is at equal distance from previous prime (21033012983) and next prime (21033013039).

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

It is not a de Polignac number, because 21033013011 - 2²⁶ = 20965904147 is a prime.

It is a super-2 number, since 2×21033013011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21033013051) 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, 1080030 + ... + 1099331.

It is an arithmetic number, because the mean of its divisors is an integer number (3506593458).

Almost surely, 2^21033013011 is an apocalyptic number.

21033013011 is a deficient number, since it is larger than the sum of its proper divisors (7019734653).

21033013011 is a wasteful number, since it uses less digits than its factorization.

21033013011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2182581.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 21033013011 its reverse (11031033012), we get a palindrome (32064046023).

The spelling of 21033013011 in words is "twenty-one billion, thirty-three million, thirteen thousand, eleven".