101115111057 has 4 divisors (see below), whose sum is σ = 134820148080. Its totient is φ = 67410074036.

The previous prime is 101115111023. The next prime is 101115111059. The reversal of 101115111057 is 750111511101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101115111057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101115111059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16852518507 + ... + 16852518512.

It is an arithmetic number, because the mean of its divisors is an integer number (33705037020).

Almost surely, 2^101115111057 is an apocalyptic number.

It is an amenable number.

101115111057 is a deficient number, since it is larger than the sum of its proper divisors (33705037023).

101115111057 is an equidigital number, since it uses as much as digits as its factorization.

101115111057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33705037022.

The product of its (nonzero) digits is 175, while the sum is 24.

Adding to 101115111057 its reverse (750111511101), we get a palindrome (851226622158).

The spelling of 101115111057 in words is "one hundred one billion, one hundred fifteen million, one hundred eleven thousand, fifty-seven".