10001002202221 has 16 divisors (see below), whose sum is σ = 10801728786240. Its totient is φ = 9228465406080.

The previous prime is 10001002202197. The next prime is 10001002202231. The reversal of 10001002202221 is 12220220010001.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 10001002202221 - 2²⁹ = 10000465331309 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 (10001002202231) 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, 9994135 + ... + 10949188.

It is an arithmetic number, because the mean of its divisors is an integer number (675108049140).

Almost surely, 2^{10001002202221} is an apocalyptic number.

It is an amenable number.

10001002202221 is a deficient number, since it is larger than the sum of its proper divisors (800726584019).

10001002202221 is a wasteful number, since it uses less digits than its factorization.

10001002202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20943996.

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

Adding to 10001002202221 its reverse (12220220010001), we get a palindrome (22221222212222).

The spelling of 10001002202221 in words is "ten trillion, one billion, two million, two hundred two thousand, two hundred twenty-one".