1221514330 has 16 divisors (see below), whose sum is σ = 2249859744. Its totient is φ = 477242640.

The previous prime is 1221514303. The next prime is 1221514361. The reversal of 1221514330 is 334151221.

It is a happy 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, 1419936 + ... + 1420795.

It is an arithmetic number, because the mean of its divisors is an integer number (140616234).

Almost surely, 2^1221514330 is an apocalyptic number.

1221514330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221514330 is a deficient number, since it is larger than the sum of its proper divisors (1028345414).

1221514330 is a wasteful number, since it uses less digits than its factorization.

1221514330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2840781.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1221514330 is about 34950.1692413642. The cubic root of 1221514330 is about 1068.9716529887.

Adding to 1221514330 its reverse (334151221), we get a palindrome (1555665551).

The spelling of 1221514330 in words is "one billion, two hundred twenty-one million, five hundred fourteen thousand, three hundred thirty".