101320221243 has 4 divisors (see below), whose sum is σ = 135093628328. Its totient is φ = 67546814160.

The previous prime is 101320221179. The next prime is 101320221259. The reversal of 101320221243 is 342122023101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342122023101 = 3 ⋅114040674367.

It is not a de Polignac number, because 101320221243 - 2⁶ = 101320221179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101320221263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16886703538 + ... + 16886703543.

It is an arithmetic number, because the mean of its divisors is an integer number (33773407082).

Almost surely, 2^101320221243 is an apocalyptic number.

101320221243 is a deficient number, since it is larger than the sum of its proper divisors (33773407085).

101320221243 is an equidigital number, since it uses as much as digits as its factorization.

101320221243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33773407084.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 101320221243 its reverse (342122023101), we get a palindrome (443442244344).

The spelling of 101320221243 in words is "one hundred one billion, three hundred twenty million, two hundred twenty-one thousand, two hundred forty-three".