2211020748877 has 2 divisors, whose sum is σ = 2211020748878. Its totient is φ = 2211020748876.

The previous prime is 2211020748803. The next prime is 2211020748887. The reversal of 2211020748877 is 7788470201122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1373523056676 + 837497692201 = 1171974^2 + 915149^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211020748877 - 2²⁷ = 2210886531149 is a prime.

It is a super-2 number, since 2×2211020748877² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2211020748877.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2211020748887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105510374438 + 1105510374439.

It is an arithmetic number, because the mean of its divisors is an integer number (1105510374439).

Almost surely, 2^{2211020748877} is an apocalyptic number.

It is an amenable number.

2211020748877 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211020748877 is an equidigital number, since it uses as much as digits as its factorization.

2211020748877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 702464, while the sum is 49.

Adding to 2211020748877 its reverse (7788470201122), we get a palindrome (9999490949999).

The spelling of 2211020748877 in words is "two trillion, two hundred eleven billion, twenty million, seven hundred forty-eight thousand, eight hundred seventy-seven".