32001224220 has 72 divisors (see below), whose sum is σ = 110937581664. Its totient is φ = 7314565248.

The previous prime is 32001224209. The next prime is 32001224243. The reversal of 32001224220 is 2242210023.

32001224220 is a `hidden beast` number, since 320 + 0 + 122 + 4 + 220 = 666.

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 = 32001224193 and 32001224202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12697639 + ... + 12700158.

Almost surely, 2^32001224220 is an apocalyptic number.

32001224220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

32001224220 is an abundant number, since it is smaller than the sum of its proper divisors (78936357444).

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

32001224220 is a wasteful number, since it uses less digits than its factorization.

32001224220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25397819 (or 25397814 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 32001224220 its reverse (2242210023), we get a palindrome (34243434243).

The spelling of 32001224220 in words is "thirty-two billion, one million, two hundred twenty-four thousand, two hundred twenty".