212220102122122 has 16 divisors (see below), whose sum is σ = 321483281491944. Its totient is φ = 105059017080000.

The previous prime is 212220102122117. The next prime is 212220102122129. The reversal of 212220102122122 is 221221201022212.

It can be written as a sum of positive squares in 4 ways, for example, as 188287273811961 + 23932828310161 = 13721781^2 + 4892119^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212220102122093 and 212220102122102.

It is not an unprimeable number, because it can be changed into a prime (212220102122129) 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, 49185472 + ... + 53325892.

Almost surely, 2^{212220102122122} is an apocalyptic number.

212220102122122 is a deficient number, since it is larger than the sum of its proper divisors (109263179369822).

212220102122122 is a wasteful number, since it uses less digits than its factorization.

212220102122122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4394265.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 212220102122122 its reverse (221221201022212), we get a palindrome (433441303144334).

The spelling of 212220102122122 in words is "two hundred twelve trillion, two hundred twenty billion, one hundred two million, one hundred twenty-two thousand, one hundred twenty-two".