11202121212169 has 2 divisors, whose sum is σ = 11202121212170. Its totient is φ = 11202121212168.

The previous prime is 11202121212103. The next prime is 11202121212173. The reversal of 11202121212169 is 96121212120211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10011927490569 + 1190193721600 = 3164163^2 + 1090960^2 .

It is an emirp because it is prime and its reverse (96121212120211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11202121212169 is a prime.

It is a super-2 number, since 2×11202121212169² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11202121212169.

It is not a weakly prime, because it can be changed into another prime (11202121215169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5601060606084 + 5601060606085.

It is an arithmetic number, because the mean of its divisors is an integer number (5601060606085).

Almost surely, 2^{11202121212169} is an apocalyptic number.

It is an amenable number.

11202121212169 is a deficient number, since it is larger than the sum of its proper divisors (1).

11202121212169 is an equidigital number, since it uses as much as digits as its factorization.

11202121212169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 31.

The spelling of 11202121212169 in words is "eleven trillion, two hundred two billion, one hundred twenty-one million, two hundred twelve thousand, one hundred sixty-nine".