1201212379 has 2 divisors, whose sum is σ = 1201212380. Its totient is φ = 1201212378.

The previous prime is 1201212377. The next prime is 1201212403. The reversal of 1201212379 is 9732121021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201212379 - 2¹ = 1201212377 is a prime.

It is a super-2 number, since 2×1201212379² = 2885822358925679282, which contains 22 as substring.

Together with 1201212377, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1201212377) 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, 600606189 + 600606190.

It is an arithmetic number, because the mean of its divisors is an integer number (600606190).

Almost surely, 2^1201212379 is an apocalyptic number.

1201212379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201212379 is an equidigital number, since it uses as much as digits as its factorization.

1201212379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 1201212379 is about 34658.5109172336. The cubic root of 1201212379 is about 1063.0163223211.

It can be divided in two parts, 120121 and 2379, that added together give a square (122500 = 350²).

The spelling of 1201212379 in words is "one billion, two hundred one million, two hundred twelve thousand, three hundred seventy-nine".