2213031131220 has 192 divisors, whose sum is σ = 7651293382656. Its totient is φ = 465403968000.

The previous prime is 2213031131177. The next prime is 2213031131321. The reversal of 2213031131220 is 221311303122.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1016095 + ... + 2336345.

It is an arithmetic number, because the mean of its divisors is an integer number (39850486368).

Almost surely, 2^{2213031131220} is an apocalyptic number.

2213031131220 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 2213031131220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3825646691328).

2213031131220 is an abundant number, since it is smaller than the sum of its proper divisors (5438262251436).

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

2213031131220 is a wasteful number, since it uses less digits than its factorization.

2213031131220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320590 (or 1320588 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 2213031131220 its reverse (221311303122), we get a palindrome (2434342434342).

The spelling of 2213031131220 in words is "two trillion, two hundred thirteen billion, thirty-one million, one hundred thirty-one thousand, two hundred twenty".