220221031032 has 144 divisors (see below), whose sum is σ = 644322205800. Its totient is φ = 67917573120.

The previous prime is 220221031031. The next prime is 220221031033. The reversal of 220221031032 is 230130122022.

It is an interprime number because it is at equal distance from previous prime (220221031031) and next prime (220221031033).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 220221030996 and 220221031014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220221031031) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1137982 + ... + 1317362.

Almost surely, 2^220221031032 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 220221031032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322161102900).

220221031032 is an abundant number, since it is smaller than the sum of its proper divisors (424101174768).

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

220221031032 is a wasteful number, since it uses less digits than its factorization.

220221031032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179486 (or 179462 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 220221031032 its reverse (230130122022), we get a palindrome (450351153054).

The spelling of 220221031032 in words is "two hundred twenty billion, two hundred twenty-one million, thirty-one thousand, thirty-two".