11321421121061 has 2 divisors, whose sum is σ = 11321421121062. Its totient is φ = 11321421121060.

The previous prime is 11321421121037. The next prime is 11321421121063. The reversal of 11321421121061 is 16012112412311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10545249549025 + 776171572036 = 3247345^2 + 881006^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11321421121061 is a prime.

It is a super-2 number, since 2×11321421121061² (a number of 27 digits) contains 22 as substring.

Together with 11321421121063, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11321421121061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11321421121063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5660710560530 + 5660710560531.

It is an arithmetic number, because the mean of its divisors is an integer number (5660710560531).

Almost surely, 2^{11321421121061} is an apocalyptic number.

It is an amenable number.

11321421121061 is a deficient number, since it is larger than the sum of its proper divisors (1).

11321421121061 is an equidigital number, since it uses as much as digits as its factorization.

11321421121061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 26.

Adding to 11321421121061 its reverse (16012112412311), we get a palindrome (27333533533372).

The spelling of 11321421121061 in words is "eleven trillion, three hundred twenty-one billion, four hundred twenty-one million, one hundred twenty-one thousand, sixty-one".