211022131212312 has 128 divisors (see below), whose sum is σ = 619266287715840. Its totient is φ = 58657713408000.

The previous prime is 211022131212271. The next prime is 211022131212337. The reversal of 211022131212312 is 213212131220112.

It is a super-2 number, since 2×211022131212312² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 74766688 + ... + 77537744.

It is an arithmetic number, because the mean of its divisors is an integer number (4838017872780).

Almost surely, 2^{211022131212312} 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 211022131212312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309633143857920).

211022131212312 is an abundant number, since it is smaller than the sum of its proper divisors (408244156503528).

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

211022131212312 is a wasteful number, since it uses less digits than its factorization.

211022131212312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2783361 (or 2783357 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 211022131212312 its reverse (213212131220112), we get a palindrome (424234262432424).

The spelling of 211022131212312 in words is "two hundred eleven trillion, twenty-two billion, one hundred thirty-one million, two hundred twelve thousand, three hundred twelve".