20120221112 has 16 divisors (see below), whose sum is σ = 39026291400. Its totient is φ = 9713210080.

The previous prime is 20120221111. The next prime is 20120221153. The reversal of 20120221112 is 21112202102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120221111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43362314 + ... + 43362777.

Almost surely, 2^20120221112 is an apocalyptic number.

It is an amenable number.

20120221112 is a deficient number, since it is larger than the sum of its proper divisors (18906070288).

20120221112 is a wasteful number, since it uses less digits than its factorization.

20120221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86725126 (or 86725122 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20120221112 its reverse (21112202102), we get a palindrome (41232423214).

The spelling of 20120221112 in words is "twenty billion, one hundred twenty million, two hundred twenty-one thousand, one hundred twelve".