60561321221 has 4 divisors (see below), whose sum is σ = 63748759200. Its totient is φ = 57373883244.

The previous prime is 60561321199. The next prime is 60561321253. The reversal of 60561321221 is 12212316506.

60561321221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 60561321221 - 2²⁶ = 60494212357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60561321281) 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, 1593718961 + ... + 1593718998.

It is an arithmetic number, because the mean of its divisors is an integer number (15937189800).

Almost surely, 2^60561321221 is an apocalyptic number.

It is an amenable number.

60561321221 is a deficient number, since it is larger than the sum of its proper divisors (3187437979).

60561321221 is a wasteful number, since it uses less digits than its factorization.

60561321221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3187437978.

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 60561321221 its reverse (12212316506), we get a palindrome (72773637727).

The spelling of 60561321221 in words is "sixty billion, five hundred sixty-one million, three hundred twenty-one thousand, two hundred twenty-one".