1002110020021 has 16 divisors (see below), whose sum is σ = 1095222901248. Its totient is φ = 909333057600.

The previous prime is 1002110020001. The next prime is 1002110020039. The reversal of 1002110020021 is 1200200112001.

It is not a de Polignac number, because 1002110020021 - 2⁹ = 1002110019509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002110020001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45265671 + ... + 45287803.

It is an arithmetic number, because the mean of its divisors is an integer number (68451431328).

Almost surely, 2^{1002110020021} is an apocalyptic number.

1002110020021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1002110020021 is a deficient number, since it is larger than the sum of its proper divisors (93112881227).

1002110020021 is a wasteful number, since it uses less digits than its factorization.

1002110020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29532.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1002110020021 its reverse (1200200112001), we get a palindrome (2202310132022).

The spelling of 1002110020021 in words is "one trillion, two billion, one hundred ten million, twenty thousand, twenty-one".