3121332211212 has 24 divisors (see below), whose sum is σ = 7460745286512. Its totient is φ = 1015067385600.

The previous prime is 3121332211199. The next prime is 3121332211247. The reversal of 3121332211212 is 2121122331213.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3172085089 + ... + 3172086072.

It is an arithmetic number, because the mean of its divisors is an integer number (310864386938).

Almost surely, 2^{3121332211212} is an apocalyptic number.

It is an amenable number.

3121332211212 is an abundant number, since it is smaller than the sum of its proper divisors (4339413075300).

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

3121332211212 is a wasteful number, since it uses less digits than its factorization.

3121332211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6344171209 (or 6344171207 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

Adding to 3121332211212 its reverse (2121122331213), we get a palindrome (5242454542425).

The spelling of 3121332211212 in words is "three trillion, one hundred twenty-one billion, three hundred thirty-two million, two hundred eleven thousand, two hundred twelve".