10020002021012 has 24 divisors (see below), whose sum is σ = 17583722880360. Its totient is φ = 4996088294400.

The previous prime is 10020002020969. The next prime is 10020002021053. The reversal of 10020002021012 is 21012020002001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5244264881296 + 4775737139716 = 2290036^2 + 2185346^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10020002020984 and 10020002021002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4775438 + ... + 6545594.

It is an arithmetic number, because the mean of its divisors is an integer number (732655120015).

Almost surely, 2^{10020002021012} is an apocalyptic number.

It is an amenable number.

10020002021012 is a deficient number, since it is larger than the sum of its proper divisors (7563720859348).

10020002021012 is a wasteful number, since it uses less digits than its factorization.

10020002021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774091 (or 1774089 counting only the distinct ones).

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

Adding to 10020002021012 its reverse (21012020002001), we get a palindrome (31032022023013).

The spelling of 10020002021012 in words is "ten trillion, twenty billion, two million, twenty-one thousand, twelve".