3121232212 has 96 divisors (see below), whose sum is σ = 6520872960. Its totient is φ = 1279756800.

The previous prime is 3121232203. The next prime is 3121232221. The reversal of 3121232212 is 2122321213.

It is an interprime number because it is at equal distance from previous prime (3121232203) and next prime (3121232221).

It is a self number, because there is not a number n which added to its sum of digits gives 3121232212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20670337 + ... + 20670487.

It is an arithmetic number, because the mean of its divisors is an integer number (67925760).

Almost surely, 2^3121232212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3121232212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3260436480).

3121232212 is an abundant number, since it is smaller than the sum of its proper divisors (3399640748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3121232212 is a wasteful number, since it uses less digits than its factorization.

3121232212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461 (or 459 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 3121232212 is about 55867.9891530025. The cubic root of 3121232212 is about 1461.4210552585.

Adding to 3121232212 its reverse (2122321213), we get a palindrome (5243553425).

The spelling of 3121232212 in words is "three billion, one hundred twenty-one million, two hundred thirty-two thousand, two hundred twelve".