23221001011 has 8 divisors (see below), whose sum is σ = 25265039744. Its totient is φ = 21213792000.

The previous prime is 23221001009. The next prime is 23221001053. The reversal of 23221001011 is 11010012232.

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

It is a cyclic number.

It is not a de Polignac number, because 23221001011 - 2¹ = 23221001009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23221000982 and 23221001000.

It is not an unprimeable number, because it can be changed into a prime (23221001071) 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, 9206115 + ... + 9208636.

It is an arithmetic number, because the mean of its divisors is an integer number (3158129968).

Almost surely, 2^23221001011 is an apocalyptic number.

23221001011 is a deficient number, since it is larger than the sum of its proper divisors (2044038733).

23221001011 is a wasteful number, since it uses less digits than its factorization.

23221001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18414861.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 23221001011 its reverse (11010012232), we get a palindrome (34231013243).

The spelling of 23221001011 in words is "twenty-three billion, two hundred twenty-one million, one thousand, eleven".