21033242097 has 32 divisors (see below), whose sum is σ = 32305413888. Its totient is φ = 11923808256.

The previous prime is 21033242089. The next prime is 21033242141. The reversal of 21033242097 is 79024233012.

It is not a de Polignac number, because 21033242097 - 2³ = 21033242089 is a prime.

It is a super-2 number, since 2×21033242097² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21033242047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1504813 + ... + 1518725.

It is an arithmetic number, because the mean of its divisors is an integer number (1009544184).

Almost surely, 2^21033242097 is an apocalyptic number.

It is an amenable number.

21033242097 is a deficient number, since it is larger than the sum of its proper divisors (11272171791).

21033242097 is a wasteful number, since it uses less digits than its factorization.

21033242097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14489.

The product of its (nonzero) digits is 18144, while the sum is 33.

The spelling of 21033242097 in words is "twenty-one billion, thirty-three million, two hundred forty-two thousand, ninety-seven".