32021320121 has 24 divisors (see below), whose sum is σ = 37666118016. Its totient is φ = 27141397920.

The previous prime is 32021320099. The next prime is 32021320127. The reversal of 32021320121 is 12102312023.

It is not a de Polignac number, because 32021320121 - 2¹⁴ = 32021303737 is a prime.

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 32021320121.

It is not an unprimeable number, because it can be changed into a prime (32021320127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1613360 + ... + 1633086.

It is an arithmetic number, because the mean of its divisors is an integer number (1569421584).

Almost surely, 2^32021320121 is an apocalyptic number.

It is an amenable number.

32021320121 is a deficient number, since it is larger than the sum of its proper divisors (5644797895).

32021320121 is a wasteful number, since it uses less digits than its factorization.

32021320121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20109 (or 20102 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 32021320121 its reverse (12102312023), we get a palindrome (44123632144).

The spelling of 32021320121 in words is "thirty-two billion, twenty-one million, three hundred twenty thousand, one hundred twenty-one".