2131220333310 has 128 divisors (see below), whose sum is σ = 5318156943360. Its totient is φ = 546017500800.

The previous prime is 2131220333293. The next prime is 2131220333317. The reversal of 2131220333310 is 133330221312.

It is a super-2 number, since 2×2131220333310² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131220333317) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 147186651 + ... + 147201129.

It is an arithmetic number, because the mean of its divisors is an integer number (41548101120).

Almost surely, 2^{2131220333310} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2131220333310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2659078471680).

2131220333310 is an abundant number, since it is smaller than the sum of its proper divisors (3186936610050).

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

2131220333310 is a wasteful number, since it uses less digits than its factorization.

2131220333310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15654.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 2131220333310 its reverse (133330221312), we get a palindrome (2264550554622).

The spelling of 2131220333310 in words is "two trillion, one hundred thirty-one billion, two hundred twenty million, three hundred thirty-three thousand, three hundred ten".