1215151050 has 48 divisors (see below), whose sum is σ = 3019137120. Its totient is φ = 323442240.

The previous prime is 1215151043. The next prime is 1215151057. The reversal of 1215151050 is 501515121.

It is an interprime number because it is at equal distance from previous prime (1215151043) and next prime (1215151057).

It is a super-2 number, since 2×1215151050² = 2953184148632205000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1215151057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77256 + ... + 91644.

It is an arithmetic number, because the mean of its divisors is an integer number (62898690).

Almost surely, 2^1215151050 is an apocalyptic number.

1215151050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1215151050 is an abundant number, since it is smaller than the sum of its proper divisors (1803986070).

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

1215151050 is a wasteful number, since it uses less digits than its factorization.

1215151050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14967 (or 14962 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 21.

The square root of 1215151050 is about 34859.0167675452. The cubic root of 1215151050 is about 1067.1122091635.

Adding to 1215151050 its reverse (501515121), we get a palindrome (1716666171).

The spelling of 1215151050 in words is "one billion, two hundred fifteen million, one hundred fifty-one thousand, fifty".