11012221002061 has 2 divisors, whose sum is σ = 11012221002062. Its totient is φ = 11012221002060.

The previous prime is 11012221002037. The next prime is 11012221002149. The reversal of 11012221002061 is 16020012221011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8069860562500 + 2942360439561 = 2840750^2 + 1715331^2 .

It is an emirp because it is prime and its reverse (16020012221011) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11012221002061 is a prime.

It is a super-2 number, since 2×11012221002061² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11012221002361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5506110501030 + 5506110501031.

It is an arithmetic number, because the mean of its divisors is an integer number (5506110501031).

Almost surely, 2^{11012221002061} is an apocalyptic number.

It is an amenable number.

11012221002061 is a deficient number, since it is larger than the sum of its proper divisors (1).

11012221002061 is an equidigital number, since it uses as much as digits as its factorization.

11012221002061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 11012221002061 its reverse (16020012221011), we get a palindrome (27032233223072).

The spelling of 11012221002061 in words is "eleven trillion, twelve billion, two hundred twenty-one million, two thousand, sixty-one".