10000221231221 has 64 divisors (see below), whose sum is σ = 11296927014912. Its totient is φ = 8791899846912.

The previous prime is 10000221231197. The next prime is 10000221231263. The reversal of 10000221231221 is 12213212200001.

It is not a de Polignac number, because 10000221231221 - 2⁶ = 10000221231157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10000221231221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10000221231271) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5803958066 + ... + 5803959788.

It is an arithmetic number, because the mean of its divisors is an integer number (176514484608).

Almost surely, 2^{10000221231221} is an apocalyptic number.

It is an amenable number.

10000221231221 is a deficient number, since it is larger than the sum of its proper divisors (1296705783691).

10000221231221 is a wasteful number, since it uses less digits than its factorization.

10000221231221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2922.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 10000221231221 its reverse (12213212200001), we get a palindrome (22213433431222).

The spelling of 10000221231221 in words is "ten trillion, two hundred twenty-one million, two hundred thirty-one thousand, two hundred twenty-one".