2120213122321 has 4 divisors (see below), whose sum is σ = 2423100711232. Its totient is φ = 1817325533412.

The previous prime is 2120213122301. The next prime is 2120213122387. The reversal of 2120213122321 is 1232213120212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2120213122321 - 2⁹ = 2120213121809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2120213122292 and 2120213122301.

It is not an unprimeable number, because it can be changed into a prime (2120213122301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151443794445 + ... + 151443794458.

It is an arithmetic number, because the mean of its divisors is an integer number (605775177808).

Almost surely, 2^{2120213122321} is an apocalyptic number.

It is an amenable number.

2120213122321 is a deficient number, since it is larger than the sum of its proper divisors (302887588911).

2120213122321 is an equidigital number, since it uses as much as digits as its factorization.

2120213122321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302887588910.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 2120213122321 its reverse (1232213120212), we get a palindrome (3352426242533).

The spelling of 2120213122321 in words is "two trillion, one hundred twenty billion, two hundred thirteen million, one hundred twenty-two thousand, three hundred twenty-one".