3121022233212 has 96 divisors (see below), whose sum is σ = 7902531538944. Its totient is φ = 952985088000.

The previous prime is 3121022233181. The next prime is 3121022233271. The reversal of 3121022233212 is 2123322201213.

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, 23277148 + ... + 23410844.

It is an arithmetic number, because the mean of its divisors is an integer number (82318036864).

Almost surely, 2^{3121022233212} 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 3121022233212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3951265769472).

3121022233212 is an abundant number, since it is smaller than the sum of its proper divisors (4781509305732).

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

3121022233212 is a wasteful number, since it uses less digits than its factorization.

3121022233212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134859 (or 134857 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 3121022233212 its reverse (2123322201213), we get a palindrome (5244344434425).

The spelling of 3121022233212 in words is "three trillion, one hundred twenty-one billion, twenty-two million, two hundred thirty-three thousand, two hundred twelve".