20211122212 has 24 divisors (see below), whose sum is σ = 36914879232. Its totient is φ = 9664195200.

The previous prime is 20211122209. The next prime is 20211122227. The reversal of 20211122212 is 21222111202.

It is a happy number.

It is a super-2 number, since 2×20211122212² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 488037 + ... + 527827.

It is an arithmetic number, because the mean of its divisors is an integer number (1538119968).

Almost surely, 2^20211122212 is an apocalyptic number.

It is an amenable number.

20211122212 is a deficient number, since it is larger than the sum of its proper divisors (16703757020).

20211122212 is a wasteful number, since it uses less digits than its factorization.

20211122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45339 (or 45337 counting only the distinct ones).

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

Adding to 20211122212 its reverse (21222111202), we get a palindrome (41433233414).

The spelling of 20211122212 in words is "twenty billion, two hundred eleven million, one hundred twenty-two thousand, two hundred twelve".