2101135877 has 2 divisors, whose sum is σ = 2101135878. Its totient is φ = 2101135876.

The previous prime is 2101135849. The next prime is 2101135889. The reversal of 2101135877 is 7785311012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1375964836 + 725171041 = 37094^2 + 26929^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101135877 - 2²² = 2096941573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101135847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050567938 + 1050567939.

It is an arithmetic number, because the mean of its divisors is an integer number (1050567939).

Almost surely, 2^2101135877 is an apocalyptic number.

It is an amenable number.

2101135877 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101135877 is an equidigital number, since it uses as much as digits as its factorization.

2101135877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 35.

The square root of 2101135877 is about 45838.1487082539. The cubic root of 2101135877 is about 1280.8100091528.

Adding to 2101135877 its reverse (7785311012), we get a palindrome (9886446889).

It can be divided in two parts, 2101135 and 877, that added together give a palindrome (2102012).

The spelling of 2101135877 in words is "two billion, one hundred one million, one hundred thirty-five thousand, eight hundred seventy-seven".