20231421112 has 64 divisors (see below), whose sum is σ = 43880760000. Its totient is φ = 8565543936.

The previous prime is 20231421109. The next prime is 20231421113. The reversal of 20231421112 is 21112413202.

It is a super-2 number, since 2×20231421112² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20231421112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20231421113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2125548 + ... + 2135044.

It is an arithmetic number, because the mean of its divisors is an integer number (685636875).

Almost surely, 2^20231421112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20231421112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21940380000).

20231421112 is an abundant number, since it is smaller than the sum of its proper divisors (23649338888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20231421112 is a wasteful number, since it uses less digits than its factorization.

20231421112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9968 (or 9964 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20231421112 its reverse (21112413202), we get a palindrome (41343834314).

The spelling of 20231421112 in words is "twenty billion, two hundred thirty-one million, four hundred twenty-one thousand, one hundred twelve".