22220121211210 has 16 divisors (see below), whose sum is σ = 43072850348136. Its totient is φ = 8204352447168.

The previous prime is 22220121211159. The next prime is 22220121211237. The reversal of 22220121211210 is 1211212102222.

It can be written as a sum of positive squares in 4 ways, for example, as 11037537753841 + 11182583457369 = 3322279^2 + 3344037^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 85462004529 + ... + 85462004788.

Almost surely, 2^{22220121211210} is an apocalyptic number.

22220121211210 is a deficient number, since it is larger than the sum of its proper divisors (20852729136926).

22220121211210 is a wasteful number, since it uses less digits than its factorization.

22220121211210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170924009337.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22220121211210 its reverse (1211212102222), we get a palindrome (23431333313432).

The spelling of 22220121211210 in words is "twenty-two trillion, two hundred twenty billion, one hundred twenty-one million, two hundred eleven thousand, two hundred ten".