1208220000 has 240 divisors, whose sum is σ = 4270820400. Its totient is φ = 297216000.

The previous prime is 1208219989. The next prime is 1208220017. The reversal of 1208220000 is 228021.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 779226 + ... + 780774.

It is an arithmetic number, because the mean of its divisors is an integer number (17795085).

Almost surely, 2^1208220000 is an apocalyptic number.

1208220000 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 1208220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2135410200).

1208220000 is an abundant number, since it is smaller than the sum of its proper divisors (3062600400).

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

1208220000 is a wasteful number, since it uses less digits than its factorization.

1208220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595 (or 1572 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1208220000 is about 34759.4591442387. The cubic root of 1208220000 is about 1065.0794536151.

Adding to 1208220000 its reverse (228021), we get a palindrome (1208448021).

The spelling of 1208220000 in words is "one billion, two hundred eight million, two hundred twenty thousand".