12221076100 has 36 divisors (see below), whose sum is σ = 26524886500. Its totient is φ = 4887480960.

The previous prime is 12221076041. The next prime is 12221076113. The reversal of 12221076100 is 167012221.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 11710084 + 12209366016 = 3422^2 + 110496^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 746806 + ... + 762994.

Almost surely, 2^12221076100 is an apocalyptic number.

12221076100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221076100 is an abundant number, since it is smaller than the sum of its proper divisors (14303810400).

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

12221076100 is a wasteful number, since it uses less digits than its factorization.

12221076100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23752 (or 23745 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 12221076100 its reverse (167012221), we get a palindrome (12388088321).

The spelling of 12221076100 in words is "twelve billion, two hundred twenty-one million, seventy-six thousand, one hundred".