10202002120021 has 8 divisors (see below), whose sum is σ = 10264815532800. Its totient is φ = 10139356434480.

The previous prime is 10202002119977. The next prime is 10202002120043. The reversal of 10202002120021 is 12002120020201.

It is a happy number.

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 10202002120021 - 2²⁷ = 10201867902293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10202002119983 and 10202002120010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202002120421) 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, 41809785 + ... + 42053086.

It is an arithmetic number, because the mean of its divisors is an integer number (1283101941600).

Almost surely, 2^{10202002120021} is an apocalyptic number.

It is an amenable number.

10202002120021 is a deficient number, since it is larger than the sum of its proper divisors (62813412779).

10202002120021 is an equidigital number, since it uses as much as digits as its factorization.

10202002120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83863619.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 10202002120021 its reverse (12002120020201), we get a palindrome (22204122140222).

The spelling of 10202002120021 in words is "ten trillion, two hundred two billion, two million, one hundred twenty thousand, twenty-one".