32120220331013 has 4 divisors (see below), whose sum is σ = 32646781320108. Its totient is φ = 31593659341920.

The previous prime is 32120220330949. The next prime is 32120220331027. The reversal of 32120220331013 is 31013302202123.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10353162122689 + 21767058208324 = 3217633^2 + 4665518^2 .

It is a cyclic number.

It is not a de Polignac number, because 32120220331013 - 2⁶ = 32120220330949 is a prime.

It is a super-2 number, since 2×32120220331013² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 32120220331013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32120220351013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263280494456 + ... + 263280494577.

It is an arithmetic number, because the mean of its divisors is an integer number (8161695330027).

Almost surely, 2^{32120220331013} is an apocalyptic number.

It is an amenable number.

32120220331013 is a deficient number, since it is larger than the sum of its proper divisors (526560989095).

32120220331013 is an equidigital number, since it uses as much as digits as its factorization.

32120220331013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526560989094.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 32120220331013 its reverse (31013302202123), we get a palindrome (63133522533136).

The spelling of 32120220331013 in words is "thirty-two trillion, one hundred twenty billion, two hundred twenty million, three hundred thirty-one thousand, thirteen".