32221312220220 has 48 divisors (see below), whose sum is σ = 90283075491840. Its totient is φ = 8586311708736.

The previous prime is 32221312220159. The next prime is 32221312220221. The reversal of 32221312220220 is 2202221312223.

It is a super-2 number, since 2×32221312220220² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32221312220221) 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, 188608180 + ... + 188778939.

It is an arithmetic number, because the mean of its divisors is an integer number (1880897406080).

Almost surely, 2^{32221312220220} is an apocalyptic number.

32221312220220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

32221312220220 is an abundant number, since it is smaller than the sum of its proper divisors (58061763271620).

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

32221312220220 is a wasteful number, since it uses less digits than its factorization.

32221312220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377388554 (or 377388552 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 32221312220220 its reverse (2202221312223), we get a palindrome (34423533532443).

The spelling of 32221312220220 in words is "thirty-two trillion, two hundred twenty-one billion, three hundred twelve million, two hundred twenty thousand, two hundred twenty".