5621061055111 has 2 divisors, whose sum is σ = 5621061055112. Its totient is φ = 5621061055110.

The previous prime is 5621061055079. The next prime is 5621061055199. The reversal of 5621061055111 is 1115501601265.

5621061055111 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5621061055111 - 2⁵ = 5621061055079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5621061055411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2810530527555 + 2810530527556.

It is an arithmetic number, because the mean of its divisors is an integer number (2810530527556).

Almost surely, 2^{5621061055111} is an apocalyptic number.

5621061055111 is a deficient number, since it is larger than the sum of its proper divisors (1).

5621061055111 is an equidigital number, since it uses as much as digits as its factorization.

5621061055111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 34.

Adding to 5621061055111 its reverse (1115501601265), we get a palindrome (6736562656376).

The spelling of 5621061055111 in words is "five trillion, six hundred twenty-one billion, sixty-one million, fifty-five thousand, one hundred eleven".