1212263205 has 8 divisors (see below), whose sum is σ = 1939621152. Its totient is φ = 646540368.

The previous prime is 1212263189. The next prime is 1212263219. The reversal of 1212263205 is 5023622121.

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

It is not a de Polignac number, because 1212263205 - 2⁴ = 1212263189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40408759 + ... + 40408788.

It is an arithmetic number, because the mean of its divisors is an integer number (242452644).

Almost surely, 2^1212263205 is an apocalyptic number.

1212263205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1212263205 is a deficient number, since it is larger than the sum of its proper divisors (727357947).

1212263205 is an equidigital number, since it uses as much as digits as its factorization.

1212263205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80817555.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1212263205 is about 34817.5703488914. The cubic root of 1212263205 is about 1066.2661966170.

Adding to 1212263205 its reverse (5023622121), we get a palindrome (6235885326).

The spelling of 1212263205 in words is "one billion, two hundred twelve million, two hundred sixty-three thousand, two hundred five".