1000020121002 has 72 divisors (see below), whose sum is σ = 2527723220256. Its totient is φ = 284896546704.

The previous prime is 1000020120989. The next prime is 1000020121033. The reversal of 1000020121002 is 2001210200001.

1000020121002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1327678 + ... + 1939785.

It is an arithmetic number, because the mean of its divisors is an integer number (35107266948).

Almost surely, 2^{1000020121002} is an apocalyptic number.

1000020121002 is an abundant number, since it is smaller than the sum of its proper divisors (1527703099254).

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

1000020121002 is a wasteful number, since it uses less digits than its factorization.

1000020121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3267832 (or 3267822 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1000020121002 its reverse (2001210200001), we get a palindrome (3001230321003).

The spelling of 1000020121002 in words is "one trillion, twenty million, one hundred twenty-one thousand, two".