32121312213 has 4 divisors (see below), whose sum is σ = 42828416288. Its totient is φ = 21414208140.

The previous prime is 32121312211. The next prime is 32121312233. The reversal of 32121312213 is 31221312123.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31221312123 = 3 ⋅10407104041.

It is not a de Polignac number, because 32121312213 - 2¹ = 32121312211 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 32121312213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32121312211) 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, 5353552033 + ... + 5353552038.

It is an arithmetic number, because the mean of its divisors is an integer number (10707104072).

Almost surely, 2^32121312213 is an apocalyptic number.

It is an amenable number.

32121312213 is a deficient number, since it is larger than the sum of its proper divisors (10707104075).

32121312213 is a wasteful number, since it uses less digits than its factorization.

32121312213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10707104074.

The product of its digits is 432, while the sum is 21.

Adding to 32121312213 its reverse (31221312123), we get a palindrome (63342624336).

The spelling of 32121312213 in words is "thirty-two billion, one hundred twenty-one million, three hundred twelve thousand, two hundred thirteen".