1233021379 has 2 divisors, whose sum is σ = 1233021380. Its totient is φ = 1233021378.

The previous prime is 1233021299. The next prime is 1233021401. The reversal of 1233021379 is 9731203321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1233021379 - 2¹⁵ = 1232988611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1233021379.

It is not a weakly prime, because it can be changed into another prime (1233021479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616510689 + 616510690.

It is an arithmetic number, because the mean of its divisors is an integer number (616510690).

Almost surely, 2^1233021379 is an apocalyptic number.

1233021379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1233021379 is an equidigital number, since it uses as much as digits as its factorization.

1233021379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 1233021379 is about 35114.4041527120. The cubic root of 1233021379 is about 1072.3178504802.

The spelling of 1233021379 in words is "one billion, two hundred thirty-three million, twenty-one thousand, three hundred seventy-nine".