65221222102 has 16 divisors (see below), whose sum is σ = 99240407712. Its totient is φ = 32141370240.

The previous prime is 65221222069. The next prime is 65221222103. The reversal of 65221222102 is 20122212256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65221222103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401128 + ... + 539764.

It is an arithmetic number, because the mean of its divisors is an integer number (6202525482).

Almost surely, 2^65221222102 is an apocalyptic number.

65221222102 is a deficient number, since it is larger than the sum of its proper divisors (34019185610).

65221222102 is a wasteful number, since it uses less digits than its factorization.

65221222102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142023.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 65221222102 its reverse (20122212256), we get a palindrome (85343434358).

The spelling of 65221222102 in words is "sixty-five billion, two hundred twenty-one million, two hundred twenty-two thousand, one hundred two".