1212321430 has 8 divisors (see below), whose sum is σ = 2182178592. Its totient is φ = 484928568.

The previous prime is 1212321419. The next prime is 1212321463. The reversal of 1212321430 is 341232121.

It is a happy number.

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

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1212321398 and 1212321407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60616062 + ... + 60616081.

It is an arithmetic number, because the mean of its divisors is an integer number (272772324).

Almost surely, 2^1212321430 is an apocalyptic number.

1212321430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212321430 is a deficient number, since it is larger than the sum of its proper divisors (969857162).

1212321430 is a wasteful number, since it uses less digits than its factorization.

1212321430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121232150.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1212321430 is about 34818.4064827786. The cubic root of 1212321430 is about 1066.2832672650.

Adding to 1212321430 its reverse (341232121), we get a palindrome (1553553551).

The spelling of 1212321430 in words is "one billion, two hundred twelve million, three hundred twenty-one thousand, four hundred thirty".