122100012218 has 16 divisors (see below), whose sum is σ = 183499388520. Its totient is φ = 60933600000.

The previous prime is 122100012217. The next prime is 122100012269. The reversal of 122100012218 is 812210001221.

It can be written as a sum of positive squares in 4 ways, for example, as 119828822569 + 2271189649 = 346163^2 + 47657^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 122100012218.

It is not an unprimeable number, because it can be changed into a prime (122100012217) 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, 6251468 + ... + 6270968.

Almost surely, 2^122100012218 is an apocalyptic number.

122100012218 is a deficient number, since it is larger than the sum of its proper divisors (61399376302).

122100012218 is a wasteful number, since it uses less digits than its factorization.

122100012218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25313.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 122100012218 its reverse (812210001221), we get a palindrome (934310013439).

The spelling of 122100012218 in words is "one hundred twenty-two billion, one hundred million, twelve thousand, two hundred eighteen".