12026621000 has 64 divisors (see below), whose sum is σ = 28167750000. Its totient is φ = 4806297600.

The previous prime is 12026620999. The next prime is 12026621017. The reversal of 12026621000 is 12662021.

It is a happy number.

12026621000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 2524660516 + 9501960484 = 50246^2 + 97478^2 .

It is a super-2 number, since 2×12026621000² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1244186 + ... + 1253814.

Almost surely, 2^12026621000 is an apocalyptic number.

12026621000 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 12026621000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14083875000).

12026621000 is an abundant number, since it is smaller than the sum of its proper divisors (16141129000).

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

12026621000 is a wasteful number, since it uses less digits than its factorization.

12026621000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10899 (or 10885 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The spelling of 12026621000 in words is "twelve billion, twenty-six million, six hundred twenty-one thousand".