3133211001221 has 4 divisors (see below), whose sum is σ = 3580812572832. Its totient is φ = 2685609429612.

The previous prime is 3133211001163. The next prime is 3133211001241. The reversal of 3133211001221 is 1221001123313.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 3133211001221 - 2¹⁴ = 3133210984837 is a prime.

It is a super-2 number, since 2×3133211001221² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3133211001193 and 3133211001202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3133211001241) 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, 223800785795 + ... + 223800785808.

It is an arithmetic number, because the mean of its divisors is an integer number (895203143208).

Almost surely, 2^{3133211001221} is an apocalyptic number.

It is an amenable number.

3133211001221 is a deficient number, since it is larger than the sum of its proper divisors (447601571611).

3133211001221 is an equidigital number, since it uses as much as digits as its factorization.

3133211001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447601571610.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 3133211001221 its reverse (1221001123313), we get a palindrome (4354212124534).

The spelling of 3133211001221 in words is "three trillion, one hundred thirty-three billion, two hundred eleven million, one thousand, two hundred twenty-one".