301222139 has 2 divisors, whose sum is σ = 301222140. Its totient is φ = 301222138.

The previous prime is 301222127. The next prime is 301222147. The reversal of 301222139 is 931222103.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-301222139 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (301222109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 150611069 + 150611070.

It is an arithmetic number, because the mean of its divisors is an integer number (150611070).

Almost surely, 2^301222139 is an apocalyptic number.

301222139 is a deficient number, since it is larger than the sum of its proper divisors (1).

301222139 is an equidigital number, since it uses as much as digits as its factorization.

301222139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 301222139 is about 17355.7523317199. The cubic root of 301222139 is about 670.3407630210.

The spelling of 301222139 in words is "three hundred one million, two hundred twenty-two thousand, one hundred thirty-nine".