12206215700 has 72 divisors (see below), whose sum is σ = 30306226944. Its totient is φ = 4180176000.

The previous prime is 12206215687. The next prime is 12206215711. The reversal of 12206215700 is 751260221.

It is a self number, because there is not a number n which added to its sum of digits gives 12206215700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 628130 + ... + 647270.

Almost surely, 2^12206215700 is an apocalyptic number.

12206215700 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 12206215700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15153113472).

12206215700 is an abundant number, since it is smaller than the sum of its proper divisors (18100011244).

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

12206215700 is a wasteful number, since it uses less digits than its factorization.

12206215700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20073 (or 20066 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

Adding to 12206215700 its reverse (751260221), we get a palindrome (12957475921).

The spelling of 12206215700 in words is "twelve billion, two hundred six million, two hundred fifteen thousand, seven hundred".