221120011001077 has 2 divisors, whose sum is σ = 221120011001078. Its totient is φ = 221120011001076.

The previous prime is 221120011001069. The next prime is 221120011001119. The reversal of 221120011001077 is 770100110021122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118110685279876 + 103009325721201 = 10867874^2 + 10149351^2 .

It is a cyclic number.

It is not a de Polignac number, because 221120011001077 - 2³ = 221120011001069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221120011001027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110560005500538 + 110560005500539.

It is an arithmetic number, because the mean of its divisors is an integer number (110560005500539).

Almost surely, 2^{221120011001077} is an apocalyptic number.

It is an amenable number.

221120011001077 is a deficient number, since it is larger than the sum of its proper divisors (1).

221120011001077 is an equidigital number, since it uses as much as digits as its factorization.

221120011001077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 392, while the sum is 25.

Adding to 221120011001077 its reverse (770100110021122), we get a palindrome (991220121022199).

The spelling of 221120011001077 in words is "two hundred twenty-one trillion, one hundred twenty billion, eleven million, one thousand, seventy-seven".