12212020444 has 36 divisors (see below), whose sum is σ = 23237749920. Its totient is φ = 5612855040.

The previous prime is 12212020439. The next prime is 12212020501. The reversal of 12212020444 is 44402021221.

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 125437 + ... + 200395.

Almost surely, 2^12212020444 is an apocalyptic number.

It is an amenable number.

12212020444 is a deficient number, since it is larger than the sum of its proper divisors (11025729476).

12212020444 is a wasteful number, since it uses less digits than its factorization.

12212020444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75230 (or 75215 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 12212020444 its reverse (44402021221), we get a palindrome (56614041665).

The spelling of 12212020444 in words is "twelve billion, two hundred twelve million, twenty thousand, four hundred forty-four".