1215210168 has 128 divisors (see below), whose sum is σ = 3514368000. Its totient is φ = 388644480.

The previous prime is 1215210109. The next prime is 1215210181. The reversal of 1215210168 is 8610125121.

1215210168 is a `hidden beast` number, since 121 + 521 + 0 + 16 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 849678 + ... + 851106.

It is an arithmetic number, because the mean of its divisors is an integer number (27456000).

Almost surely, 2^1215210168 is an apocalyptic number.

1215210168 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1215210168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1757184000).

1215210168 is an abundant number, since it is smaller than the sum of its proper divisors (2299157832).

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

1215210168 is a wasteful number, since it uses less digits than its factorization.

1215210168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1602 (or 1592 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The square root of 1215210168 is about 34859.8647157444. The cubic root of 1215210168 is about 1067.1295141498.

Adding to 1215210168 its reverse (8610125121), we get a palindrome (9825335289).

The spelling of 1215210168 in words is "one billion, two hundred fifteen million, two hundred ten thousand, one hundred sixty-eight".