23021321011 has 16 divisors (see below), whose sum is σ = 24904635840. Its totient is φ = 21154204800.

The previous prime is 23021321003. The next prime is 23021321021. The reversal of 23021321011 is 11012312032.

It is a cyclic number.

It is not a de Polignac number, because 23021321011 - 2³ = 23021321003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23021321021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6646066 + ... + 6649528.

It is an arithmetic number, because the mean of its divisors is an integer number (1556539740).

Almost surely, 2^23021321011 is an apocalyptic number.

23021321011 is a deficient number, since it is larger than the sum of its proper divisors (1883314829).

23021321011 is a wasteful number, since it uses less digits than its factorization.

23021321011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5646.

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

Adding to 23021321011 its reverse (11012312032), we get a palindrome (34033633043).

The spelling of 23021321011 in words is "twenty-three billion, twenty-one million, three hundred twenty-one thousand, eleven".