373321867021 has 2 divisors, whose sum is σ = 373321867022. Its totient is φ = 373321867020.

The previous prime is 373321867019. The next prime is 373321867033. The reversal of 373321867021 is 120768123373.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188107833796 + 185214033225 = 433714^2 + 430365^2 .

It is a cyclic number.

It is not a de Polignac number, because 373321867021 - 2¹ = 373321867019 is a prime.

Together with 373321867019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (373321867091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186660933510 + 186660933511.

It is an arithmetic number, because the mean of its divisors is an integer number (186660933511).

Almost surely, 2^373321867021 is an apocalyptic number.

It is an amenable number.

373321867021 is a deficient number, since it is larger than the sum of its proper divisors (1).

373321867021 is an equidigital number, since it uses as much as digits as its factorization.

373321867021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 43.

The spelling of 373321867021 in words is "three hundred seventy-three billion, three hundred twenty-one million, eight hundred sixty-seven thousand, twenty-one".