101112421057 has 4 divisors (see below), whose sum is σ = 101591627056. Its totient is φ = 100633215060.

The previous prime is 101112421019. The next prime is 101112421139. The reversal of 101112421057 is 750124211101.

It is a happy number.

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-101112421057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101112421457) 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 in 3 ways as a sum of consecutive naturals, for example, 239602683 + ... + 239603104.

It is an arithmetic number, because the mean of its divisors is an integer number (25397906764).

Almost surely, 2^101112421057 is an apocalyptic number.

It is an amenable number.

101112421057 is a deficient number, since it is larger than the sum of its proper divisors (479205999).

101112421057 is an equidigital number, since it uses as much as digits as its factorization.

101112421057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479205998.

The product of its (nonzero) digits is 560, while the sum is 25.

Adding to 101112421057 its reverse (750124211101), we get a palindrome (851236632158).

The spelling of 101112421057 in words is "one hundred one billion, one hundred twelve million, four hundred twenty-one thousand, fifty-seven".