10002021220221 has 8 divisors (see below), whose sum is σ = 13336043200704. Its totient is φ = 6668006693280.

The previous prime is 10002021220201. The next prime is 10002021220229. The reversal of 10002021220221 is 12202212020001.

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

It is not a de Polignac number, because 10002021220221 - 2¹⁸ = 10002020958077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10002021220221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10002021220229) 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, 3357360 + ... + 5592486.

It is an arithmetic number, because the mean of its divisors is an integer number (1667005400088).

Almost surely, 2^{10002021220221} is an apocalyptic number.

It is an amenable number.

10002021220221 is a deficient number, since it is larger than the sum of its proper divisors (3334021980483).

10002021220221 is a wasteful number, since it uses less digits than its factorization.

10002021220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3726771.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 10002021220221 its reverse (12202212020001), we get a palindrome (22204233240222).

The spelling of 10002021220221 in words is "ten trillion, two billion, twenty-one million, two hundred twenty thousand, two hundred twenty-one".