36702220065221 has 2 divisors, whose sum is σ = 36702220065222. Its totient is φ = 36702220065220.

The previous prime is 36702220065139. The next prime is 36702220065223. The reversal of 36702220065221 is 12256002220763.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20962790448196 + 15739429617025 = 4578514^2 + 3967295^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36702220065221 is a prime.

It is a Sophie Germain prime.

Together with 36702220065223, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36702220065223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18351110032610 + 18351110032611.

It is an arithmetic number, because the mean of its divisors is an integer number (18351110032611).

Almost surely, 2^{36702220065221} is an apocalyptic number.

It is an amenable number.

36702220065221 is a deficient number, since it is larger than the sum of its proper divisors (1).

36702220065221 is an equidigital number, since it uses as much as digits as its factorization.

36702220065221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 38.

Adding to 36702220065221 its reverse (12256002220763), we get a palindrome (48958222285984).

The spelling of 36702220065221 in words is "thirty-six trillion, seven hundred two billion, two hundred twenty million, sixty-five thousand, two hundred twenty-one".