23221222011 has 24 divisors (see below), whose sum is σ = 36135634080. Its totient is φ = 14284550016.

The previous prime is 23221222007. The next prime is 23221222019. The reversal of 23221222011 is 11022212232.

23221222011 is a `hidden beast` number, since 232 + 212 + 220 + 1 + 1 = 666.

It is not a de Polignac number, because 23221222011 - 2² = 23221222007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23221222019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 282930 + ... + 355656.

It is an arithmetic number, because the mean of its divisors is an integer number (1505651420).

Almost surely, 2^23221222011 is an apocalyptic number.

23221222011 is a deficient number, since it is larger than the sum of its proper divisors (12914412069).

23221222011 is a wasteful number, since it uses less digits than its factorization.

23221222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75475 (or 75472 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 23221222011 its reverse (11022212232), we get a palindrome (34243434243).

The spelling of 23221222011 in words is "twenty-three billion, two hundred twenty-one million, two hundred twenty-two thousand, eleven".