10002010021221 has 8 divisors (see below), whose sum is σ = 13336036783264. Its totient is φ = 6667994970000.

The previous prime is 10002010021189. The next prime is 10002010021231. The reversal of 10002010021221 is 12212001020001.

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

It is not a de Polignac number, because 10002010021221 - 2⁵ = 10002010021189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10002010021197 and 10002010021206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10002010021231) 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, 690655 + ... + 4525596.

It is an arithmetic number, because the mean of its divisors is an integer number (1667004597908).

Almost surely, 2^{10002010021221} is an apocalyptic number.

It is an amenable number.

10002010021221 is a deficient number, since it is larger than the sum of its proper divisors (3334026762043).

10002010021221 is an equidigital number, since it uses as much as digits as its factorization.

10002010021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5855411.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10002010021221 its reverse (12212001020001), we get a palindrome (22214011041222).

The spelling of 10002010021221 in words is "ten trillion, two billion, ten million, twenty-one thousand, two hundred twenty-one".