1220200806 has 64 divisors (see below), whose sum is σ = 2829966336. Its totient is φ = 346636800.

The previous prime is 1220200801. The next prime is 1220200811. The reversal of 1220200806 is 6080020221.

It is an interprime number because it is at equal distance from previous prime (1220200801) and next prime (1220200811).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220200801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 302056 + ... + 306068.

It is an arithmetic number, because the mean of its divisors is an integer number (44218224).

Almost surely, 2^1220200806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220200806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1414983168).

1220200806 is an abundant number, since it is smaller than the sum of its proper divisors (1609765530).

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

1220200806 is a wasteful number, since it uses less digits than its factorization.

1220200806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4317.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1220200806 is about 34931.3728044003. The cubic root of 1220200806 is about 1068.5883518456.

The spelling of 1220200806 in words is "one billion, two hundred twenty million, two hundred thousand, eight hundred six".