2120221331243 has 16 divisors (see below), whose sum is σ = 2238338836800. Its totient is φ = 2004286901760.

The previous prime is 2120221331237. The next prime is 2120221331273. The reversal of 2120221331243 is 3421331220212.

It is a cyclic number.

It is not a de Polignac number, because 2120221331243 - 2⁴ = 2120221331227 is a prime.

It is a super-3 number, since 3×2120221331243³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120221331273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4028273 + ... + 4524093.

It is an arithmetic number, because the mean of its divisors is an integer number (139896177300).

Almost surely, 2^{2120221331243} is an apocalyptic number.

2120221331243 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2120221331243 is a deficient number, since it is larger than the sum of its proper divisors (118117505557).

2120221331243 is a wasteful number, since it uses less digits than its factorization.

2120221331243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498022.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 2120221331243 its reverse (3421331220212), we get a palindrome (5541552551455).

The spelling of 2120221331243 in words is "two trillion, one hundred twenty billion, two hundred twenty-one million, three hundred thirty-one thousand, two hundred forty-three".