220202121212 has 24 divisors (see below), whose sum is σ = 393483844656. Its totient is φ = 107787259008.

The previous prime is 220202121173. The next prime is 220202121221. The reversal of 220202121212 is 212121202022.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1039538 + ... + 1233305.

It is an arithmetic number, because the mean of its divisors is an integer number (16395160194).

Almost surely, 2^220202121212 is an apocalyptic number.

It is an amenable number.

220202121212 is a deficient number, since it is larger than the sum of its proper divisors (173281723444).

220202121212 is a wasteful number, since it uses less digits than its factorization.

220202121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2273357 (or 2273355 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 220202121212 its reverse (212121202022), we get a palindrome (432323323234).

The spelling of 220202121212 in words is "two hundred twenty billion, two hundred two million, one hundred twenty-one thousand, two hundred twelve".