122102202102521 has 2 divisors, whose sum is σ = 122102202102522. Its totient is φ = 122102202102520.

The previous prime is 122102202102499. The next prime is 122102202102547. The reversal of 122102202102521 is 125201202201221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107425679412496 + 14676522690025 = 10364636^2 + 3830995^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122102202102521 is a prime.

It is a super-3 number, since 3×122102202102521³ (a number of 43 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (122102202102121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61051101051260 + 61051101051261.

It is an arithmetic number, because the mean of its divisors is an integer number (61051101051261).

Almost surely, 2^{122102202102521} is an apocalyptic number.

It is an amenable number.

122102202102521 is a deficient number, since it is larger than the sum of its proper divisors (1).

122102202102521 is an equidigital number, since it uses as much as digits as its factorization.

122102202102521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 122102202102521 its reverse (125201202201221), we get a palindrome (247303404303742).

The spelling of 122102202102521 in words is "one hundred twenty-two trillion, one hundred two billion, two hundred two million, one hundred two thousand, five hundred twenty-one".