12221959206 has 16 divisors (see below), whose sum is σ = 25040112048. Its totient is φ = 3974620800.

The previous prime is 12221959181. The next prime is 12221959223. The reversal of 12221959206 is 60295912221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24841135 + ... + 24841626.

It is an arithmetic number, because the mean of its divisors is an integer number (1565007003).

Almost surely, 2^12221959206 is an apocalyptic number.

12221959206 is an abundant number, since it is smaller than the sum of its proper divisors (12818152842).

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

12221959206 is a wasteful number, since it uses less digits than its factorization.

12221959206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49682807.

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 12221959206 in words is "twelve billion, two hundred twenty-one million, nine hundred fifty-nine thousand, two hundred six".