22003235961 has 16 divisors (see below), whose sum is σ = 34434923904. Its totient is φ = 12233458944.

The previous prime is 22003235953. The next prime is 22003235981. The reversal of 22003235961 is 16953230022.

It is not a de Polignac number, because 22003235961 - 2³ = 22003235953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22003235911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14158320 + ... + 14159873.

It is an arithmetic number, because the mean of its divisors is an integer number (2152182744).

Almost surely, 2^22003235961 is an apocalyptic number.

22003235961 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22003235961 is a deficient number, since it is larger than the sum of its proper divisors (12431687943).

22003235961 is a wasteful number, since it uses less digits than its factorization.

22003235961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28318240.

The product of its (nonzero) digits is 19440, while the sum is 33.

Adding to 22003235961 its reverse (16953230022), we get a palindrome (38956465983).

The spelling of 22003235961 in words is "twenty-two billion, three million, two hundred thirty-five thousand, nine hundred sixty-one".