101111002021877 has 2 divisors, whose sum is σ = 101111002021878. Its totient is φ = 101111002021876.

The previous prime is 101111002021831. The next prime is 101111002022003. The reversal of 101111002021877 is 778120200111101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80209774792081 + 20901227229796 = 8955991^2 + 4571786^2 .

It is a cyclic number.

It is not a de Polignac number, because 101111002021877 - 2²⁶ = 101110934913013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101111002021177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50555501010938 + 50555501010939.

It is an arithmetic number, because the mean of its divisors is an integer number (50555501010939).

Almost surely, 2^{101111002021877} is an apocalyptic number.

It is an amenable number.

101111002021877 is a deficient number, since it is larger than the sum of its proper divisors (1).

101111002021877 is an equidigital number, since it uses as much as digits as its factorization.

101111002021877 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 32.

Adding to 101111002021877 its reverse (778120200111101), we get a palindrome (879231202132978).

The spelling of 101111002021877 in words is "one hundred one trillion, one hundred eleven billion, two million, twenty-one thousand, eight hundred seventy-seven".