233121009971 has 2 divisors, whose sum is σ = 233121009972. Its totient is φ = 233121009970.

The previous prime is 233121009937. The next prime is 233121010007. The reversal of 233121009971 is 179900121332.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 233121009971 - 2²² = 233116815667 is a prime.

It is not a weakly prime, because it can be changed into another prime (233121009271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116560504985 + 116560504986.

It is an arithmetic number, because the mean of its divisors is an integer number (116560504986).

Almost surely, 2^233121009971 is an apocalyptic number.

233121009971 is a deficient number, since it is larger than the sum of its proper divisors (1).

233121009971 is an equidigital number, since it uses as much as digits as its factorization.

233121009971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 38.

The spelling of 233121009971 in words is "two hundred thirty-three billion, one hundred twenty-one million, nine thousand, nine hundred seventy-one".