2123210351376 has 135 divisors (see below), whose sum is σ = 6141469878453. Its totient is φ = 684731710080.

The previous prime is 2123210351347. The next prime is 2123210351413. The reversal of 2123210351376 is 6731530123212.

The square root of 2123210351376 is 1457124.

It is a perfect power (a square), and thus also a powerful number.

2123210351376 is a `hidden beast` number, since 2 + 1 + 2 + 32 + 103 + 513 + 7 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1719507690000 + 403702661376 = 1311300^2 + 635376^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2123210351376.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 542048170 + ... + 542052086.

Almost surely, 2^{2123210351376} is an apocalyptic number.

2123210351376 is the 1457124-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2123210351376

2123210351376 is an abundant number, since it is smaller than the sum of its proper divisors (4018259527077).

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

2123210351376 is an frugal number, since it uses more digits than its factorization.

2123210351376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7910 (or 3953 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

Multiplying 2123210351376 by its sum of digits (36), we get a square (76435572649536 = 8742744²).

2123210351376 divided by its sum of digits (36) gives a square (58978065316 = 242854²).

Adding to 2123210351376 its reverse (6731530123212), we get a palindrome (8854740474588).

The spelling of 2123210351376 in words is "two trillion, one hundred twenty-three billion, two hundred ten million, three hundred fifty-one thousand, three hundred seventy-six".