2223212431320 has 128 divisors (see below), whose sum is σ = 7413455462400. Its totient is φ = 592636860288.

The previous prime is 2223212431289. The next prime is 2223212431361. The reversal of 2223212431320 is 231342123222.

2223212431320 is a `hidden beast` number, since 2 + 2 + 2 + 321 + 2 + 4 + 313 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 2543337 + ... + 3303783.

It is an arithmetic number, because the mean of its divisors is an integer number (57917620800).

Almost surely, 2^{2223212431320} is an apocalyptic number.

2223212431320 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 2223212431320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3706727731200).

2223212431320 is an abundant number, since it is smaller than the sum of its proper divisors (5190243031080).

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

2223212431320 is a wasteful number, since it uses less digits than its factorization.

2223212431320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763174 (or 763164 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 2223212431320 its reverse (231342123222), we get a palindrome (2454554554542).

It can be divided in two parts, 222321 and 2431320, that added together give a square (2653641 = 1629²).

The spelling of 2223212431320 in words is "two trillion, two hundred twenty-three billion, two hundred twelve million, four hundred thirty-one thousand, three hundred twenty".