1211299379 has 8 divisors (see below), whose sum is σ = 1242995952. Its totient is φ = 1179763200.

The previous prime is 1211299373. The next prime is 1211299391. The reversal of 1211299379 is 9739921121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1211299379 - 2⁸ = 1211299123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211299373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24722 + ... + 55079.

It is an arithmetic number, because the mean of its divisors is an integer number (155374494).

Almost surely, 2^1211299379 is an apocalyptic number.

1211299379 is a deficient number, since it is larger than the sum of its proper divisors (31696573).

1211299379 is an equidigital number, since it uses as much as digits as its factorization.

1211299379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80197.

The product of its digits is 61236, while the sum is 44.

The square root of 1211299379 is about 34803.7265102460. The cubic root of 1211299379 is about 1065.9835386485.

The spelling of 1211299379 in words is "one billion, two hundred eleven million, two hundred ninety-nine thousand, three hundred seventy-nine".