31212101322001 has 8 divisors (see below), whose sum is σ = 31535367262280. Its totient is φ = 30888865824768.

The previous prime is 31212101321969. The next prime is 31212101322047. The reversal of 31212101322001 is 10022310121213.

It can be written as a sum of positive squares in 4 ways, for example, as 18037009000000 + 13175092322001 = 4247000^2 + 3629751^2 .

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 31212101322001 - 2⁵ = 31212101321969 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 31212101322001.

It is not an unprimeable number, because it can be changed into a prime (31212101322071) 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, 5546736 + ... + 9653521.

It is an arithmetic number, because the mean of its divisors is an integer number (3941920907785).

Almost surely, 2^{31212101322001} is an apocalyptic number.

It is an amenable number.

31212101322001 is a deficient number, since it is larger than the sum of its proper divisors (323265940279).

31212101322001 is a wasteful number, since it uses less digits than its factorization.

31212101322001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15221523.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 31212101322001 its reverse (10022310121213), we get a palindrome (41234411443214).

The spelling of 31212101322001 in words is "thirty-one trillion, two hundred twelve billion, one hundred one million, three hundred twenty-two thousand, one".