21023302111 has 8 divisors (see below), whose sum is σ = 24033320960. Its totient is φ = 18014955768.

The previous prime is 21023301979. The next prime is 21023302121. The reversal of 21023302111 is 11120332012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21023302111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21023302121) 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, 391071 + ... + 441568.

It is an arithmetic number, because the mean of its divisors is an integer number (3004165120).

Almost surely, 2^21023302111 is an apocalyptic number.

21023302111 is a deficient number, since it is larger than the sum of its proper divisors (3010018849).

21023302111 is an equidigital number, since it uses as much as digits as its factorization.

21023302111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836253.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21023302111 its reverse (11120332012), we get a palindrome (32143634123).

The spelling of 21023302111 in words is "twenty-one billion, twenty-three million, three hundred two thousand, one hundred eleven".