220102021212 has 24 divisors (see below), whose sum is σ = 527451691536. Its totient is φ = 71384439168.

The previous prime is 220102021211. The next prime is 220102021241. The reversal of 220102021212 is 212120201022.

220102021212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 220102021191 and 220102021200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220102021211) by changing a digit.

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, 247862193 + ... + 247863080.

It is an arithmetic number, because the mean of its divisors is an integer number (21977153814).

Almost surely, 2^220102021212 is an apocalyptic number.

It is an amenable number.

220102021212 is an abundant number, since it is smaller than the sum of its proper divisors (307349670324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220102021212 is a wasteful number, since it uses less digits than its factorization.

220102021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495725317 (or 495725315 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 220102021212 its reverse (212120201022), we get a palindrome (432222222234).

The spelling of 220102021212 in words is "two hundred twenty billion, one hundred two million, twenty-one thousand, two hundred twelve".