32145513221021 has 8 divisors (see below), whose sum is σ = 34087918098744. Its totient is φ = 30208829713920.

The previous prime is 32145513220969. The next prime is 32145513221077. The reversal of 32145513221021 is 12012231554123.

It can be written as a sum of positive squares in 4 ways, for example, as 4599695196100 + 27545818024921 = 2144690^2 + 5248411^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 32145513221021 - 2¹⁰ = 32145513219997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32145513271021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1430331080 + ... + 1430353553.

It is an arithmetic number, because the mean of its divisors is an integer number (4260989762343).

Almost surely, 2^{32145513221021} is an apocalyptic number.

It is an amenable number.

32145513221021 is a deficient number, since it is larger than the sum of its proper divisors (1942404877723).

32145513221021 is a wasteful number, since it uses less digits than its factorization.

32145513221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2860685311.

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 32145513221021 its reverse (12012231554123), we get a palindrome (44157744775144).

The spelling of 32145513221021 in words is "thirty-two trillion, one hundred forty-five billion, five hundred thirteen million, two hundred twenty-one thousand, twenty-one".