11221122202061 has 2 divisors, whose sum is σ = 11221122202062. Its totient is φ = 11221122202060.

The previous prime is 11221122202009. The next prime is 11221122202099. The reversal of 11221122202061 is 16020222112211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6811416197161 + 4409706004900 = 2609869^2 + 2099930^2 .

It is a cyclic number.

It is not a de Polignac number, because 11221122202061 - 2¹⁴ = 11221122185677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11221122252061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610561101030 + 5610561101031.

It is an arithmetic number, because the mean of its divisors is an integer number (5610561101031).

Almost surely, 2^{11221122202061} is an apocalyptic number.

It is an amenable number.

11221122202061 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221122202061 is an equidigital number, since it uses as much as digits as its factorization.

11221122202061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 11221122202061 its reverse (16020222112211), we get a palindrome (27241344314272).

The spelling of 11221122202061 in words is "eleven trillion, two hundred twenty-one billion, one hundred twenty-two million, two hundred two thousand, sixty-one".