31212201103321 has 8 divisors (see below), whose sum is σ = 35755816401344. Its totient is φ = 26689768161840.

The previous prime is 31212201103313. The next prime is 31212201103331. The reversal of 31212201103321 is 12330110221213.

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

It is not a de Polignac number, because 31212201103321 - 2³ = 31212201103313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31212201103292 and 31212201103301.

It is not an unprimeable number, because it can be changed into a prime (31212201103301) 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, 5295585975 + ... + 5295591868.

It is an arithmetic number, because the mean of its divisors is an integer number (4469477050168).

Almost surely, 2^{31212201103321} is an apocalyptic number.

It is an amenable number.

31212201103321 is a deficient number, since it is larger than the sum of its proper divisors (4543615298023).

31212201103321 is a wasteful number, since it uses less digits than its factorization.

31212201103321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10591178271.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 31212201103321 its reverse (12330110221213), we get a palindrome (43542311324534).

The spelling of 31212201103321 in words is "thirty-one trillion, two hundred twelve billion, two hundred one million, one hundred three thousand, three hundred twenty-one".