32122121220 has 72 divisors (see below), whose sum is σ = 111356691264. Its totient is φ = 7342198848.

The previous prime is 32122121203. The next prime is 32122121263. The reversal of 32122121220 is 2212122123.

32122121220 is a `hidden beast` number, since 321 + 2 + 2 + 121 + 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 = 32122121193 and 32122121202.

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, 12745614 + ... + 12748133.

It is an arithmetic number, because the mean of its divisors is an integer number (1546620712).

Almost surely, 2^32122121220 is an apocalyptic number.

32122121220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

32122121220 is an abundant number, since it is smaller than the sum of its proper divisors (79234570044).

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

32122121220 is a wasteful number, since it uses less digits than its factorization.

32122121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25493769 (or 25493764 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 32122121220 its reverse (2212122123), we get a palindrome (34334243343).

The spelling of 32122121220 in words is "thirty-two billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty".