101545421321 has 4 divisors (see below), whose sum is σ = 106889917200. Its totient is φ = 96200925444.

The previous prime is 101545421297. The next prime is 101545421323. The reversal of 101545421321 is 123124545101.

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 not a de Polignac number, because 101545421321 - 2¹⁰ = 101545420297 is a prime.

It is a super-2 number, since 2×101545421321² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101545421323) 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, 2672247911 + ... + 2672247948.

It is an arithmetic number, because the mean of its divisors is an integer number (26722479300).

Almost surely, 2^101545421321 is an apocalyptic number.

It is an amenable number.

101545421321 is a deficient number, since it is larger than the sum of its proper divisors (5344495879).

101545421321 is an equidigital number, since it uses as much as digits as its factorization.

101545421321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5344495878.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 101545421321 its reverse (123124545101), we get a palindrome (224669966422).

The spelling of 101545421321 in words is "one hundred one billion, five hundred forty-five million, four hundred twenty-one thousand, three hundred twenty-one".