2102401277 has 2 divisors, whose sum is σ = 2102401278. Its totient is φ = 2102401276.

The previous prime is 2102401261. The next prime is 2102401331. The reversal of 2102401277 is 7721042012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1833638041 + 268763236 = 42821^2 + 16394^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102401277 - 2⁴ = 2102401261 is a prime.

It is a super-2 number, since 2×2102401277² = 8840182259062461458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2102404277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051200638 + 1051200639.

It is an arithmetic number, because the mean of its divisors is an integer number (1051200639).

Almost surely, 2^2102401277 is an apocalyptic number.

It is an amenable number.

2102401277 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102401277 is an equidigital number, since it uses as much as digits as its factorization.

2102401277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 2102401277 is about 45851.9495441579. The cubic root of 2102401277 is about 1281.0670783173.

Adding to 2102401277 its reverse (7721042012), we get a palindrome (9823443289).

The spelling of 2102401277 in words is "two billion, one hundred two million, four hundred one thousand, two hundred seventy-seven".