371920037221 has 2 divisors, whose sum is σ = 371920037222. Its totient is φ = 371920037220.

The previous prime is 371920037183. The next prime is 371920037227. The reversal of 371920037221 is 122730029173.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 342358392996 + 29561644225 = 585114^2 + 171935^2 .

It is a cyclic number.

It is not a de Polignac number, because 371920037221 - 2²³ = 371911648613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (371920037227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 185960018610 + 185960018611.

It is an arithmetic number, because the mean of its divisors is an integer number (185960018611).

Almost surely, 2^371920037221 is an apocalyptic number.

It is an amenable number.

371920037221 is a deficient number, since it is larger than the sum of its proper divisors (1).

371920037221 is an equidigital number, since it uses as much as digits as its factorization.

371920037221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 37.

The spelling of 371920037221 in words is "three hundred seventy-one billion, nine hundred twenty million, thirty-seven thousand, two hundred twenty-one".