3132211221 has 16 divisors (see below), whose sum is σ = 4705672320. Its totient is φ = 2058729120.

The previous prime is 3132211217. The next prime is 3132211241. The reversal of 3132211221 is 1221122313.

It is not a de Polignac number, because 3132211221 - 2² = 3132211217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3132211194 and 3132211203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3132211241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 815040 + ... + 818873.

It is an arithmetic number, because the mean of its divisors is an integer number (294104520).

Almost surely, 2^3132211221 is an apocalyptic number.

It is an amenable number.

3132211221 is a deficient number, since it is larger than the sum of its proper divisors (1573461099).

3132211221 is a wasteful number, since it uses less digits than its factorization.

3132211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633993 (or 1633987 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 3132211221 is about 55966.1613923985. The cubic root of 3132211221 is about 1463.1325778955.

Adding to 3132211221 its reverse (1221122313), we get a palindrome (4353333534).

The spelling of 3132211221 in words is "three billion, one hundred thirty-two million, two hundred eleven thousand, two hundred twenty-one".