20212220312 has 16 divisors (see below), whose sum is σ = 40127202360. Its totient is φ = 9511633024.

The previous prime is 20212220309. The next prime is 20212220321. The reversal of 20212220312 is 21302221202.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74309498 + ... + 74309769.

Almost surely, 2^20212220312 is an apocalyptic number.

It is an amenable number.

20212220312 is a deficient number, since it is larger than the sum of its proper divisors (19914982048).

20212220312 is a wasteful number, since it uses less digits than its factorization.

20212220312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148619290 (or 148619286 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20212220312 its reverse (21302221202), we get a palindrome (41514441514).

The spelling of 20212220312 in words is "twenty billion, two hundred twelve million, two hundred twenty thousand, three hundred twelve".