32213121220240 has 20 divisors (see below), whose sum is σ = 74895506837244. Its totient is φ = 12885248488064.

The previous prime is 32213121220207. The next prime is 32213121220243. The reversal of 32213121220240 is 4202212131223.

It can be written as a sum of positive squares in 2 ways, for example, as 11701352684176 + 20511768536064 = 3420724^2 + 4528992^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (32213121220243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201332007547 + ... + 201332007706.

Almost surely, 2^{32213121220240} is an apocalyptic number.

It is an amenable number.

32213121220240 is an abundant number, since it is smaller than the sum of its proper divisors (42682385617004).

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

32213121220240 is a wasteful number, since it uses less digits than its factorization.

32213121220240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402664015266 (or 402664015260 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 32213121220240 its reverse (4202212131223), we get a palindrome (36415333351463).

The spelling of 32213121220240 in words is "thirty-two trillion, two hundred thirteen billion, one hundred twenty-one million, two hundred twenty thousand, two hundred forty".