233121009937 has 2 divisors, whose sum is σ = 233121009938. Its totient is φ = 233121009936.

The previous prime is 233121009923. The next prime is 233121009971. The reversal of 233121009937 is 739900121332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188109568656 + 45011441281 = 433716^2 + 212159^2 .

It is a cyclic number.

It is not a de Polignac number, because 233121009937 - 2²⁷ = 232986792209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 233121009937.

It is not a weakly prime, because it can be changed into another prime (233121009917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116560504968 + 116560504969.

It is an arithmetic number, because the mean of its divisors is an integer number (116560504969).

Almost surely, 2^233121009937 is an apocalyptic number.

It is an amenable number.

233121009937 is a deficient number, since it is larger than the sum of its proper divisors (1).

233121009937 is an equidigital number, since it uses as much as digits as its factorization.

233121009937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 40.

The spelling of 233121009937 in words is "two hundred thirty-three billion, one hundred twenty-one million, nine thousand, nine hundred thirty-seven".