52117105113221 has 2 divisors, whose sum is σ = 52117105113222. Its totient is φ = 52117105113220.

The previous prime is 52117105113179. The next prime is 52117105113341. The reversal of 52117105113221 is 12231150171125.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50497367822500 + 1619737290721 = 7106150^2 + 1272689^2 .

It is a cyclic number.

It is not a de Polignac number, because 52117105113221 - 2²² = 52117100918917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52117105112221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26058552556610 + 26058552556611.

It is an arithmetic number, because the mean of its divisors is an integer number (26058552556611).

Almost surely, 2^{52117105113221} is an apocalyptic number.

It is an amenable number.

52117105113221 is a deficient number, since it is larger than the sum of its proper divisors (1).

52117105113221 is an equidigital number, since it uses as much as digits as its factorization.

52117105113221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 32.

Adding to 52117105113221 its reverse (12231150171125), we get a palindrome (64348255284346).

The spelling of 52117105113221 in words is "fifty-two trillion, one hundred seventeen billion, one hundred five million, one hundred thirteen thousand, two hundred twenty-one".