12005621002 has 16 divisors (see below), whose sum is σ = 18225379080. Its totient is φ = 5930603008.

The previous prime is 12005620993. The next prime is 12005621009. The reversal of 12005621002 is 20012650021.

It can be written as a sum of positive squares in 4 ways, for example, as 5083547401 + 6922073601 = 71299^2 + 83199^2 .

It is not an unprimeable number, because it can be changed into a prime (12005621009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200898 + ... + 253714.

Almost surely, 2^12005621002 is an apocalyptic number.

12005621002 is a deficient number, since it is larger than the sum of its proper divisors (6219758078).

12005621002 is a wasteful number, since it uses less digits than its factorization.

12005621002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54185.

The product of its (nonzero) digits is 240, while the sum is 19.

The spelling of 12005621002 in words is "twelve billion, five million, six hundred twenty-one thousand, two".