2120854237321 has 4 divisors (see below), whose sum is σ = 2125395681552. Its totient is φ = 2116312793092.

The previous prime is 2120854237309. The next prime is 2120854237357. The reversal of 2120854237321 is 1237324580212.

It is a happy number.

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 2120854237321 - 2¹¹ = 2120854235273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120854237301) 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, 2270721415 + ... + 2270722348.

It is an arithmetic number, because the mean of its divisors is an integer number (531348920388).

Almost surely, 2^{2120854237321} is an apocalyptic number.

It is an amenable number.

2120854237321 is a deficient number, since it is larger than the sum of its proper divisors (4541444231).

2120854237321 is an equidigital number, since it uses as much as digits as its factorization.

2120854237321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4541444230.

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 2120854237321 in words is "two trillion, one hundred twenty billion, eight hundred fifty-four million, two hundred thirty-seven thousand, three hundred twenty-one".