1221411430 has 8 divisors (see below), whose sum is σ = 2198540592. Its totient is φ = 488564568.

The previous prime is 1221411379. The next prime is 1221411467. The reversal of 1221411430 is 341141221.

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

It is a junction number, because it is equal to n+sod(n) for n = 1221411398 and 1221411407.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 61070562 + ... + 61070581.

It is an arithmetic number, because the mean of its divisors is an integer number (274817574).

Almost surely, 2^1221411430 is an apocalyptic number.

1221411430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221411430 is a deficient number, since it is larger than the sum of its proper divisors (977129162).

1221411430 is a wasteful number, since it uses less digits than its factorization.

1221411430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122141150.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1221411430 is about 34948.6971144848. The cubic root of 1221411430 is about 1068.9416355289.

Adding to 1221411430 its reverse (341141221), we get a palindrome (1562552651).

The spelling of 1221411430 in words is "one billion, two hundred twenty-one million, four hundred eleven thousand, four hundred thirty".