21202233021011 has 4 divisors (see below), whose sum is σ = 24231123452592. Its totient is φ = 18173342589432.

The previous prime is 21202233020977. The next prime is 21202233021083. The reversal of 21202233021011 is 11012033220212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21202233021011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21202233023011) 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 3 ways as a sum of consecutive naturals, for example, 1514445215780 + ... + 1514445215793.

It is an arithmetic number, because the mean of its divisors is an integer number (6057780863148).

Almost surely, 2^{21202233021011} is an apocalyptic number.

21202233021011 is a deficient number, since it is larger than the sum of its proper divisors (3028890431581).

21202233021011 is an equidigital number, since it uses as much as digits as its factorization.

21202233021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3028890431580.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21202233021011 its reverse (11012033220212), we get a palindrome (32214266241223).

The spelling of 21202233021011 in words is "twenty-one trillion, two hundred two billion, two hundred thirty-three million, twenty-one thousand, eleven".