1215011214 has 48 divisors (see below), whose sum is σ = 2696320224. Its totient is φ = 395304000.

The previous prime is 1215011209. The next prime is 1215011243. The reversal of 1215011214 is 4121105121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124372 + ... + 133784.

It is an arithmetic number, because the mean of its divisors is an integer number (56173338).

Almost surely, 2^1215011214 is an apocalyptic number.

1215011214 is an abundant number, since it is smaller than the sum of its proper divisors (1481309010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1215011214 is a wasteful number, since it uses less digits than its factorization.

1215011214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9593 (or 9590 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 1215011214 is about 34857.0109734039. The cubic root of 1215011214 is about 1067.0712742177.

Adding to 1215011214 its reverse (4121105121), we get a palindrome (5336116335).

The spelling of 1215011214 in words is "one billion, two hundred fifteen million, eleven thousand, two hundred fourteen".