1212379803 has 12 divisors (see below), whose sum is σ = 1854228168. Its totient is φ = 760708800.

The previous prime is 1212379793. The next prime is 1212379843. The reversal of 1212379803 is 3089732121.

It is not a de Polignac number, because 1212379803 - 2⁴ = 1212379787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212379843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3961873 + ... + 3962178.

It is an arithmetic number, because the mean of its divisors is an integer number (154519014).

Almost surely, 2^1212379803 is an apocalyptic number.

1212379803 is a deficient number, since it is larger than the sum of its proper divisors (641848365).

1212379803 is a wasteful number, since it uses less digits than its factorization.

1212379803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7924074 (or 7924071 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 1212379803 is about 34819.2447218489. The cubic root of 1212379803 is about 1066.3003807556.

The spelling of 1212379803 in words is "one billion, two hundred twelve million, three hundred seventy-nine thousand, eight hundred three".