20143221032 has 96 divisors (see below), whose sum is σ = 43841325600. Its totient is φ = 8580960000.

The previous prime is 20143221031. The next prime is 20143221067. The reversal of 20143221032 is 23012234102.

It is a junction number, because it is equal to n+sod(n) for n = 20143220995 and 20143221013.

It is not an unprimeable number, because it can be changed into a prime (20143221031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17055482 + ... + 17056662.

It is an arithmetic number, because the mean of its divisors is an integer number (456680475).

Almost surely, 2^20143221032 is an apocalyptic number.

20143221032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20143221032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21920662800).

20143221032 is an abundant number, since it is smaller than the sum of its proper divisors (23698104568).

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

20143221032 is a wasteful number, since it uses less digits than its factorization.

20143221032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419 (or 1314 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20143221032 its reverse (23012234102), we get a palindrome (43155455134).

The spelling of 20143221032 in words is "twenty billion, one hundred forty-three million, two hundred twenty-one thousand, thirty-two".