3121020223001 has 2 divisors, whose sum is σ = 3121020223002. Its totient is φ = 3121020223000.

The previous prime is 3121020222967. The next prime is 3121020223043. The reversal of 3121020223001 is 1003220201213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2841581118601 + 279439104400 = 1685699^2 + 528620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3121020223001 is a prime.

It is not a weakly prime, because it can be changed into another prime (3121020223201) 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 as a sum of consecutive naturals, namely, 1560510111500 + 1560510111501.

It is an arithmetic number, because the mean of its divisors is an integer number (1560510111501).

Almost surely, 2^{3121020223001} is an apocalyptic number.

It is an amenable number.

3121020223001 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121020223001 is an equidigital number, since it uses as much as digits as its factorization.

3121020223001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 3121020223001 its reverse (1003220201213), we get a palindrome (4124240424214).

The spelling of 3121020223001 in words is "three trillion, one hundred twenty-one billion, twenty million, two hundred twenty-three thousand, one".