23331221007 has 16 divisors (see below), whose sum is σ = 31162959360. Its totient is φ = 15526841792.

The previous prime is 23331221003. The next prime is 23331221009. The reversal of 23331221007 is 70012213332.

It is a cyclic number.

It is not a de Polignac number, because 23331221007 - 2² = 23331221003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23331221003) 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 15 ways as a sum of consecutive naturals, for example, 7478794 + ... + 7481912.

It is an arithmetic number, because the mean of its divisors is an integer number (1947684960).

Almost surely, 2^23331221007 is an apocalyptic number.

23331221007 is a deficient number, since it is larger than the sum of its proper divisors (7831738353).

23331221007 is a wasteful number, since it uses less digits than its factorization.

23331221007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6702.

The product of its (nonzero) digits is 1512, while the sum is 24.

Adding to 23331221007 its reverse (70012213332), we get a palindrome (93343434339).

The spelling of 23331221007 in words is "twenty-three billion, three hundred thirty-one million, two hundred twenty-one thousand, seven".