209501220096 has 1080 divisors, whose sum is σ = 767353378176. Its totient is φ = 56620892160.

The previous prime is 209501220059. The next prime is 209501220107. The reversal of 209501220096 is 690022105902.

It is a happy number.

It is a super-2 number, since 2×209501220096² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 209501220096.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1957955275 + ... + 1957955381.

Almost surely, 2^209501220096 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 209501220096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383676689088).

209501220096 is an abundant number, since it is smaller than the sum of its proper divisors (557852158080).

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

209501220096 is a wasteful number, since it uses less digits than its factorization.

209501220096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

Adding to 209501220096 its reverse (690022105902), we get a palindrome (899523325998).

The spelling of 209501220096 in words is "two hundred nine billion, five hundred one million, two hundred twenty thousand, ninety-six".