20212222112 has 24 divisors (see below), whose sum is σ = 39841929792. Its totient is φ = 10093636800.

The previous prime is 20212222087. The next prime is 20212222123. The reversal of 20212222112 is 21122221202.

It is a happy 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, 363464 + ... + 415367.

It is an arithmetic number, because the mean of its divisors is an integer number (1660080408).

Almost surely, 2^20212222112 is an apocalyptic number.

It is an amenable number.

20212222112 is a deficient number, since it is larger than the sum of its proper divisors (19629707680).

20212222112 is an equidigital number, since it uses as much as digits as its factorization.

20212222112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779652 (or 779644 counting only the distinct ones).

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

Adding to 20212222112 its reverse (21122221202), we get a palindrome (41334443314).

The spelling of 20212222112 in words is "twenty billion, two hundred twelve million, two hundred twenty-two thousand, one hundred twelve".