220020121212212 has 12 divisors (see below), whose sum is σ = 385044357928356. Its totient is φ = 110007447518400.

The previous prime is 220020121212211. The next prime is 220020121212239. The reversal of 220020121212212 is 212212121020022.

It can be written as a sum of positive squares in 2 ways, for example, as 84396302068516 + 135623819143696 = 9186746^2 + 11645764^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220020121212211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 653082473 + ... + 653419280.

It is an arithmetic number, because the mean of its divisors is an integer number (32087029827363).

Almost surely, 2^{220020121212212} is an apocalyptic number.

It is an amenable number.

220020121212212 is a deficient number, since it is larger than the sum of its proper divisors (165024236716144).

220020121212212 is a wasteful number, since it uses less digits than its factorization.

220020121212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306543858 (or 1306543856 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 220020121212212 its reverse (212212121020022), we get a palindrome (432232242232234).

The spelling of 220020121212212 in words is "two hundred twenty trillion, twenty billion, one hundred twenty-one million, two hundred twelve thousand, two hundred twelve".