20121012002 has 48 divisors (see below), whose sum is σ = 37917771192. Its totient is φ = 7937233920.

The previous prime is 20121011983. The next prime is 20121012011. The reversal of 20121012002 is 20021012102.

It is a happy number.

20121012002 is digitally balanced in base 5, 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 4 ways, for example, as 5914994281 + 14206017721 = 76909^2 + 119189^2 .

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 23 ways as a sum of consecutive naturals, for example, 427352 + ... + 472092.

Almost surely, 2^20121012002 is an apocalyptic number.

20121012002 is a deficient number, since it is larger than the sum of its proper divisors (17796759190).

20121012002 is a wasteful number, since it uses less digits than its factorization.

20121012002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45123 (or 45116 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20121012002 its reverse (20021012102), we get a palindrome (40142024104).

The spelling of 20121012002 in words is "twenty billion, one hundred twenty-one million, twelve thousand, two".