2211302131212 has 72 divisors (see below), whose sum is σ = 5374654071696. Its totient is φ = 707569108736.

The previous prime is 2211302131187. The next prime is 2211302131267. The reversal of 2211302131212 is 2121312031122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1112638 + ... + 2379194.

It is an arithmetic number, because the mean of its divisors is an integer number (74647973218).

Almost surely, 2^{2211302131212} 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 2211302131212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2687327035848).

2211302131212 is an abundant number, since it is smaller than the sum of its proper divisors (3163351940484).

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

2211302131212 is a wasteful number, since it uses less digits than its factorization.

2211302131212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266795 (or 1266764 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 2211302131212 its reverse (2121312031122), we get a palindrome (4332614162334).

The spelling of 2211302131212 in words is "two trillion, two hundred eleven billion, three hundred two million, one hundred thirty-one thousand, two hundred twelve".