101252420755 has 4 divisors (see below), whose sum is σ = 121502904912. Its totient is φ = 81001936600.

The previous prime is 101252420741. The next prime is 101252420791. The reversal of 101252420755 is 557024252101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 557024252101 = 3271 ⋅170291731.

It is not a de Polignac number, because 101252420755 - 2¹⁹ = 101251896467 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101252420755.

It is an unprimeable number.

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, 10125242071 + ... + 10125242080.

It is an arithmetic number, because the mean of its divisors is an integer number (30375726228).

Almost surely, 2^101252420755 is an apocalyptic number.

101252420755 is a deficient number, since it is larger than the sum of its proper divisors (20250484157).

101252420755 is an equidigital number, since it uses as much as digits as its factorization.

101252420755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20250484156.

The product of its (nonzero) digits is 28000, while the sum is 34.

Adding to 101252420755 its reverse (557024252101), we get a palindrome (658276672856).

The spelling of 101252420755 in words is "one hundred one billion, two hundred fifty-two million, four hundred twenty thousand, seven hundred fifty-five".