20211043123277 has 2 divisors, whose sum is σ = 20211043123278. Its totient is φ = 20211043123276.

The previous prime is 20211043123207. The next prime is 20211043123301. The reversal of 20211043123277 is 77232134011202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12327605522761 + 7883437600516 = 3511069^2 + 2807746^2 .

It is a cyclic number.

It is not a de Polignac number, because 20211043123277 - 2³² = 20206748155981 is a prime.

It is a super-2 number, since 2×20211043123277² (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 (20211043123207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105521561638 + 10105521561639.

It is an arithmetic number, because the mean of its divisors is an integer number (10105521561639).

Almost surely, 2^{20211043123277} is an apocalyptic number.

It is an amenable number.

20211043123277 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211043123277 is an equidigital number, since it uses as much as digits as its factorization.

20211043123277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 35.

Adding to 20211043123277 its reverse (77232134011202), we get a palindrome (97443177134479).

The spelling of 20211043123277 in words is "twenty trillion, two hundred eleven billion, forty-three million, one hundred twenty-three thousand, two hundred seventy-seven".