1216590102 has 288 divisors, whose sum is σ = 3581061120. Its totient is φ = 291133440.

The previous prime is 1216590101. The next prime is 1216590119. The reversal of 1216590102 is 2010956121.

1216590102 is a `hidden beast` number, since 1 + 2 + 1 + 659 + 0 + 1 + 0 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216590101) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 12542118 + ... + 12542214.

It is an arithmetic number, because the mean of its divisors is an integer number (12434240).

Almost surely, 2^1216590102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1216590102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1790530560).

1216590102 is an abundant number, since it is smaller than the sum of its proper divisors (2364471018).

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

1216590102 is a wasteful number, since it uses less digits than its factorization.

1216590102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 1216590102 is about 34879.6516897747. The cubic root of 1216590102 is about 1067.5332882723.

The spelling of 1216590102 in words is "one billion, two hundred sixteen million, five hundred ninety thousand, one hundred two".