32120300220 has 48 divisors (see below), whose sum is σ = 90532474368. Its totient is φ = 8508686400.

The previous prime is 32120300213. The next prime is 32120300231. The reversal of 32120300220 is 2200302123.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 32120300220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1763584 + ... + 1781703.

It is an arithmetic number, because the mean of its divisors is an integer number (1886093216).

Almost surely, 2^32120300220 is an apocalyptic number.

32120300220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

32120300220 is an abundant number, since it is smaller than the sum of its proper divisors (58412174148).

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

32120300220 is a wasteful number, since it uses less digits than its factorization.

32120300220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3545450 (or 3545448 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 32120300220 its reverse (2200302123), we get a palindrome (34320602343).

The spelling of 32120300220 in words is "thirty-two billion, one hundred twenty million, three hundred thousand, two hundred twenty".