215243334532100 has 108 divisors (see below), whose sum is σ = 543355808354100. Its totient is φ = 73794980044800.

The previous prime is 215243334532033. The next prime is 215243334532159. The reversal of 215243334532100 is 1235433342512.

It can be written as a sum of positive squares in 6 ways, for example, as 32378080150276 + 182865254381824 = 5690174^2 + 13522768^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 133699940 + ... + 135300260.

It is an arithmetic number, because the mean of its divisors is an integer number (5031072299575).

Almost surely, 2^{215243334532100} is an apocalyptic number.

215243334532100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215243334532100 is an abundant number, since it is smaller than the sum of its proper divisors (328112473822000).

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

215243334532100 is a wasteful number, since it uses less digits than its factorization.

215243334532100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627798 (or 1627784 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 38.

Adding to 215243334532100 its reverse (1235433342512), we get a palindrome (216478767874612).

The spelling of 215243334532100 in words is "two hundred fifteen trillion, two hundred forty-three billion, three hundred thirty-four million, five hundred thirty-two thousand, one hundred".