1215001050 has 192 divisors, whose sum is σ = 3317894784. Its totient is φ = 293068800.

The previous prime is 1215001049. The next prime is 1215001121. The reversal of 1215001050 is 501005121.

It is a super-2 number, since 2×1215001050² = 2952455103002205000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11355097 + ... + 11355203.

It is an arithmetic number, because the mean of its divisors is an integer number (17280702).

Almost surely, 2^1215001050 is an apocalyptic number.

1215001050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1215001050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1658947392).

1215001050 is an abundant number, since it is smaller than the sum of its proper divisors (2102893734).

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

1215001050 is a wasteful number, since it uses less digits than its factorization.

1215001050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 1215001050 is about 34856.8651774654. The cubic root of 1215001050 is about 1067.0682987328.

Adding to 1215001050 its reverse (501005121), we get a palindrome (1716006171).

The spelling of 1215001050 in words is "one billion, two hundred fifteen million, one thousand, fifty".