65220121230 has 64 divisors (see below), whose sum is σ = 170905966848. Its totient is φ = 15797250560.

The previous prime is 65220121181. The next prime is 65220121231. The reversal of 65220121230 is 3212102256.

It is a self number, because there is not a number n which added to its sum of digits gives 65220121230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65220121231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 298822 + ... + 468758.

It is an arithmetic number, because the mean of its divisors is an integer number (2670405732).

Almost surely, 2^65220121230 is an apocalyptic number.

65220121230 is an abundant number, since it is smaller than the sum of its proper divisors (105685845618).

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

65220121230 is a wasteful number, since it uses less digits than its factorization.

65220121230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171121.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 65220121230 its reverse (3212102256), we get a palindrome (68432223486).

The spelling of 65220121230 in words is "sixty-five billion, two hundred twenty million, one hundred twenty-one thousand, two hundred thirty".