1212663430 has 32 divisors (see below), whose sum is σ = 2411389440. Its totient is φ = 435383520.

The previous prime is 1212663427. The next prime is 1212663433. The reversal of 1212663430 is 343662121.

It is an interprime number because it is at equal distance from previous prime (1212663427) and next prime (1212663433).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212663433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61084 + ... + 78463.

It is an arithmetic number, because the mean of its divisors is an integer number (75355920).

Almost surely, 2^1212663430 is an apocalyptic number.

1212663430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212663430 is a deficient number, since it is larger than the sum of its proper divisors (1198726010).

1212663430 is a wasteful number, since it uses less digits than its factorization.

1212663430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139644.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 1212663430 is about 34823.3173319257. The cubic root of 1212663430 is about 1066.3835252171.

The spelling of 1212663430 in words is "one billion, two hundred twelve million, six hundred sixty-three thousand, four hundred thirty".