2120314421 has 2 divisors, whose sum is σ = 2120314422. Its totient is φ = 2120314420.

The previous prime is 2120314379. The next prime is 2120314423. The reversal of 2120314421 is 1244130212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2071524196 + 48790225 = 45514^2 + 6985^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120314421 is a prime.

Together with 2120314423, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120314393 and 2120314402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120314423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060157210 + 1060157211.

It is an arithmetic number, because the mean of its divisors is an integer number (1060157211).

Almost surely, 2^2120314421 is an apocalyptic number.

It is an amenable number.

2120314421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120314421 is an equidigital number, since it uses as much as digits as its factorization.

2120314421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2120314421 is about 46046.8720001696. The cubic root of 2120314421 is about 1284.6951632476.

Adding to 2120314421 its reverse (1244130212), we get a palindrome (3364444633).

The spelling of 2120314421 in words is "two billion, one hundred twenty million, three hundred fourteen thousand, four hundred twenty-one".