39920213101 has 2 divisors, whose sum is σ = 39920213102. Its totient is φ = 39920213100.

The previous prime is 39920213089. The next prime is 39920213111. The reversal of 39920213101 is 10131202993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37065875625 + 2854337476 = 192525^2 + 53426^2 .

It is an emirp because it is prime and its reverse (10131202993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39920213101 - 2³³ = 31330278509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39920213111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19960106550 + 19960106551.

It is an arithmetic number, because the mean of its divisors is an integer number (19960106551).

Almost surely, 2^39920213101 is an apocalyptic number.

It is an amenable number.

39920213101 is a deficient number, since it is larger than the sum of its proper divisors (1).

39920213101 is an equidigital number, since it uses as much as digits as its factorization.

39920213101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 31.

The spelling of 39920213101 in words is "thirty-nine billion, nine hundred twenty million, two hundred thirteen thousand, one hundred one".