2142220349 has 2 divisors, whose sum is σ = 2142220350. Its totient is φ = 2142220348.

The previous prime is 2142220319. The next prime is 2142220361. The reversal of 2142220349 is 9430222412.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1416995449 + 725224900 = 37643^2 + 26930^2 .

It is a cyclic number.

It is not a de Polignac number, because 2142220349 - 2¹⁶ = 2142154813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2142220309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071110174 + 1071110175.

It is an arithmetic number, because the mean of its divisors is an integer number (1071110175).

Almost surely, 2^2142220349 is an apocalyptic number.

It is an amenable number.

2142220349 is a deficient number, since it is larger than the sum of its proper divisors (1).

2142220349 is an equidigital number, since it uses as much as digits as its factorization.

2142220349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 2142220349 is about 46284.1263177777. The cubic root of 2142220349 is about 1289.1042695130.

The spelling of 2142220349 in words is "two billion, one hundred forty-two million, two hundred twenty thousand, three hundred forty-nine".