122748847221 has 96 divisors (see below), whose sum is σ = 221998823424. Its totient is φ = 58263264000.

The previous prime is 122748847189. The next prime is 122748847253.

122748847221 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (122748847189) and next prime (122748847253).

It is not a de Polignac number, because 122748847221 - 2⁵ = 122748847189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122748847261) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 30631600 + ... + 30635606.

It is an arithmetic number, because the mean of its divisors is an integer number (2312487744).

Almost surely, 2^122748847221 is an apocalyptic number.

122748847221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122748847221 is a deficient number, since it is larger than the sum of its proper divisors (99249976203).

122748847221 is a wasteful number, since it uses less digits than its factorization.

122748847221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4243 (or 4142 counting only the distinct ones).

The product of its digits is 802816, while the sum is 48.

It can be divided in two parts, 122748 and 847221, that added together give a palindrome (969969).

The spelling of 122748847221 in words is "one hundred twenty-two billion, seven hundred forty-eight million, eight hundred forty-seven thousand, two hundred twenty-one".