20321444121112 has 128 divisors (see below), whose sum is σ = 40647594700800. Its totient is φ = 9504059355648.

The previous prime is 20321444121109. The next prime is 20321444121157. The reversal of 20321444121112 is 21112144412302.

It is a super-2 number, since 2×20321444121112² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2378720313 + ... + 2378728855.

It is an arithmetic number, because the mean of its divisors is an integer number (317559333600).

Almost surely, 2^{20321444121112} is an apocalyptic number.

It is an amenable number.

20321444121112 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

20321444121112 is a wasteful number, since it uses less digits than its factorization.

20321444121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10025 (or 10021 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

Adding to 20321444121112 its reverse (21112144412302), we get a palindrome (41433588533414).

The spelling of 20321444121112 in words is "twenty trillion, three hundred twenty-one billion, four hundred forty-four million, one hundred twenty-one thousand, one hundred twelve".