1215212230 has 64 divisors (see below), whose sum is σ = 2309472000. Its totient is φ = 459762688.

The previous prime is 1215212189. The next prime is 1215212261. The reversal of 1215212230 is 322125121.

It is a junction number, because it is equal to n+sod(n) for n = 1215212198 and 1215212207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5084451 + ... + 5084689.

It is an arithmetic number, because the mean of its divisors is an integer number (36085500).

Almost surely, 2^1215212230 is an apocalyptic number.

1215212230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1215212230 is a deficient number, since it is larger than the sum of its proper divisors (1094259770).

1215212230 is a wasteful number, since it uses less digits than its factorization.

1215212230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1215212230 is about 34859.8942912912. The cubic root of 1215212230 is about 1067.1301177271.

Adding to 1215212230 its reverse (322125121), we get a palindrome (1537337351).

The spelling of 1215212230 in words is "one billion, two hundred fifteen million, two hundred twelve thousand, two hundred thirty".