2121322330901 has 2 divisors, whose sum is σ = 2121322330902. Its totient is φ = 2121322330900.

The previous prime is 2121322330849. The next prime is 2121322330943. The reversal of 2121322330901 is 1090332231212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1523252108401 + 598070222500 = 1234201^2 + 773350^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121322330901 - 2¹⁸ = 2121322068757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121322330301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060661165450 + 1060661165451.

It is an arithmetic number, because the mean of its divisors is an integer number (1060661165451).

Almost surely, 2^{2121322330901} is an apocalyptic number.

It is an amenable number.

2121322330901 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121322330901 is an equidigital number, since it uses as much as digits as its factorization.

2121322330901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 2121322330901 in words is "two trillion, one hundred twenty-one billion, three hundred twenty-two million, three hundred thirty thousand, nine hundred one".