1152215100 has 216 divisors, whose sum is σ = 3892528640. Its totient is φ = 284135040.

The previous prime is 1152215089. The next prime is 1152215131. The reversal of 1152215100 is 15122511.

1152215100 = T₅ + T₆ + ... + T₁₉₀₄.

1152215100 is a `hidden beast` number, since 1 + 152 + 2 + 1 + 510 + 0 = 666.

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 71 ways as a sum of consecutive naturals, for example, 734517 + ... + 736083.

Almost surely, 2^1152215100 is an apocalyptic number.

1152215100 is a gapful number since it is divisible by the number (10) 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 1152215100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1946264320).

1152215100 is an abundant number, since it is smaller than the sum of its proper divisors (2740313540).

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

1152215100 is a wasteful number, since it uses less digits than its factorization.

1152215100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649 (or 1639 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 1152215100 is about 33944.2940713163. The cubic root of 1152215100 is about 1048.3617991641.

Adding to 1152215100 its reverse (15122511), we get a palindrome (1167337611).

The spelling of 1152215100 in words is "one billion, one hundred fifty-two million, two hundred fifteen thousand, one hundred".