12622100 has 36 divisors (see below), whose sum is σ = 27657084. Its totient is φ = 4999680.

The previous prime is 12622079. The next prime is 12622111. The reversal of 12622100 is 122621.

It can be written as a sum of positive squares in 6 ways, for example, as 5924356 + 6697744 = 2434^2 + 2588^2 .

It is a congruent number.

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, 10742 + ... + 11858.

Almost surely, 2^12622100 is an apocalyptic number.

12622100 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 12622100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13828542).

12622100 is an abundant number, since it is smaller than the sum of its proper divisors (15034984).

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

12622100 is a wasteful number, since it uses less digits than its factorization.

12622100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244 (or 1237 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 12622100 is about 3552.7594908747. The cubic root of 12622100 is about 232.8326452096.

Adding to 12622100 its reverse (122621), we get a palindrome (12744721).

The spelling of 12622100 in words is "twelve million, six hundred twenty-two thousand, one hundred".