21112022212 has 12 divisors (see below), whose sum is σ = 36950280640. Its totient is φ = 10554799176.

The previous prime is 21112022201. The next prime is 21112022221. The reversal of 21112022212 is 21222021112.

It is a happy number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 263208 + ... + 333919.

Almost surely, 2^21112022212 is an apocalyptic number.

It is an amenable number.

21112022212 is a deficient number, since it is larger than the sum of its proper divisors (15838258428).

21112022212 is a wasteful number, since it uses less digits than its factorization.

21112022212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605970 (or 605968 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21112022212 its reverse (21222021112), we get a palindrome (42334043324).

It can be divided in two parts, 211120 and 22212, that added together give a palindrome (233332).

The spelling of 21112022212 in words is "twenty-one billion, one hundred twelve million, twenty-two thousand, two hundred twelve".