1212296879 has 4 divisors (see below), whose sum is σ = 1212609360. Its totient is φ = 1211984400.

The previous prime is 1212296873. The next prime is 1212296923. The reversal of 1212296879 is 9786922121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9786922121 = 163 ⋅60042467.

It is a cyclic number.

It is not a de Polignac number, because 1212296879 - 2⁸ = 1212296623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212296873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150347 + ... + 158204.

It is an arithmetic number, because the mean of its divisors is an integer number (303152340).

Almost surely, 2^1212296879 is an apocalyptic number.

1212296879 is a deficient number, since it is larger than the sum of its proper divisors (312481).

1212296879 is an equidigital number, since it uses as much as digits as its factorization.

1212296879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312480.

The product of its digits is 217728, while the sum is 47.

The square root of 1212296879 is about 34818.0539232163. The cubic root of 1212296879 is about 1066.2760693672.

The spelling of 1212296879 in words is "one billion, two hundred twelve million, two hundred ninety-six thousand, eight hundred seventy-nine".