2231021132340 has 1152 divisors, whose sum is σ = 9061713948672. Its totient is φ = 395812085760.

The previous prime is 2231021132311. The next prime is 2231021132341. The reversal of 2231021132340 is 432311201322.

It is a super-3 number, since 3×2231021132340³ (a number of 38 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2231021132340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231021132341) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 932310184 + ... + 932312576.

It is an arithmetic number, because the mean of its divisors is an integer number (7866071136).

Almost surely, 2^{2231021132340} is an apocalyptic number.

2231021132340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2231021132340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4530856974336).

2231021132340 is an abundant number, since it is smaller than the sum of its proper divisors (6830692816332).

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

2231021132340 is a wasteful number, since it uses less digits than its factorization.

2231021132340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2517 (or 2496 counting only the distinct ones).

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

Adding to 2231021132340 its reverse (432311201322), we get a palindrome (2663332333662).

The spelling of 2231021132340 in words is "two trillion, two hundred thirty-one billion, twenty-one million, one hundred thirty-two thousand, three hundred forty".