101245220643 has 8 divisors (see below), whose sum is σ = 154278431488. Its totient is φ = 57854411784.

The previous prime is 101245220623. The next prime is 101245220677. The reversal of 101245220643 is 346022542101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 101245220643 - 2⁵ = 101245220611 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 101245220643.

It is not an unprimeable number, because it can be changed into a prime (101245220603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2410600471 + ... + 2410600512.

It is an arithmetic number, because the mean of its divisors is an integer number (19284803936).

Almost surely, 2^101245220643 is an apocalyptic number.

101245220643 is a deficient number, since it is larger than the sum of its proper divisors (53033210845).

101245220643 is an equidigital number, since it uses as much as digits as its factorization.

101245220643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4821200993.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 101245220643 its reverse (346022542101), we get a palindrome (447267762744).

The spelling of 101245220643 in words is "one hundred one billion, two hundred forty-five million, two hundred twenty thousand, six hundred forty-three".