31213122421201 has 8 divisors (see below), whose sum is σ = 35672648932800. Its totient is φ = 26753723165328.

The previous prime is 31213122421199. The next prime is 31213122421241. The reversal of 31213122421201 is 10212422131213.

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 31213122421201 - 2¹ = 31213122421199 is a prime.

It is a super-2 number, since 2×31213122421201² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31213122421241) 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, 31287751 + ... + 32269948.

It is an arithmetic number, because the mean of its divisors is an integer number (4459081116600).

Almost surely, 2^{31213122421201} is an apocalyptic number.

It is an amenable number.

31213122421201 is a deficient number, since it is larger than the sum of its proper divisors (4459526511599).

31213122421201 is an equidigital number, since it uses as much as digits as its factorization.

31213122421201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63627863.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 31213122421201 its reverse (10212422131213), we get a palindrome (41425544552414).

The spelling of 31213122421201 in words is "thirty-one trillion, two hundred thirteen billion, one hundred twenty-two million, four hundred twenty-one thousand, two hundred one".