220122212121212 has 12 divisors (see below), whose sum is σ = 398497108150680. Its totient is φ = 106265895506736.

The previous prime is 220122212121211. The next prime is 220122212121307. The reversal of 220122212121212 is 212121212221022.

It is a super-2 number, since 2×220122212121212² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220122212121211) 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, 948802638338 + ... + 948802638569.

It is an arithmetic number, because the mean of its divisors is an integer number (33208092345890).

Almost surely, 2^{220122212121212} is an apocalyptic number.

It is an amenable number.

220122212121212 is a deficient number, since it is larger than the sum of its proper divisors (178374896029468).

220122212121212 is a wasteful number, since it uses less digits than its factorization.

220122212121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1897605276940 (or 1897605276938 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 220122212121212 its reverse (212121212221022), we get a palindrome (432243424342234).

The spelling of 220122212121212 in words is "two hundred twenty trillion, one hundred twenty-two billion, two hundred twelve million, one hundred twenty-one thousand, two hundred twelve".