1002021010021 has 8 divisors (see below), whose sum is σ = 1019538228320. Its totient is φ = 984579135408.

The previous prime is 1002021009973. The next prime is 1002021010097. The reversal of 1002021010021 is 1200101202001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1002021010021 - 2³⁷ = 864582056549 is a prime.

It is a super-2 number, since 2×1002021010021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002021050021) 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, 18809091 + ... + 18862288.

It is an arithmetic number, because the mean of its divisors is an integer number (127442278540).

Almost surely, 2^{1002021010021} is an apocalyptic number.

It is an amenable number.

1002021010021 is a deficient number, since it is larger than the sum of its proper divisors (17517218299).

1002021010021 is an equidigital number, since it uses as much as digits as its factorization.

1002021010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37671843.

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

Adding to 1002021010021 its reverse (1200101202001), we get a palindrome (2202122212022).

The spelling of 1002021010021 in words is "one trillion, two billion, twenty-one million, ten thousand, twenty-one".