65221201060 has 12 divisors (see below), whose sum is σ = 136964522268. Its totient is φ = 26088480416.

The previous prime is 65221201043. The next prime is 65221201061. The reversal of 65221201060 is 6010212256.

It can be written as a sum of positive squares in 2 ways, for example, as 15645506724 + 49575694336 = 125082^2 + 222656^2 .

It is not an unprimeable number, because it can be changed into a prime (65221201061) 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, 1630530007 + ... + 1630530046.

It is an arithmetic number, because the mean of its divisors is an integer number (11413710189).

Almost surely, 2^65221201060 is an apocalyptic number.

It is an amenable number.

65221201060 is an abundant number, since it is smaller than the sum of its proper divisors (71743321208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65221201060 is a wasteful number, since it uses less digits than its factorization.

65221201060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3261060062 (or 3261060060 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The spelling of 65221201060 in words is "sixty-five billion, two hundred twenty-one million, two hundred one thousand, sixty".