10011002222221 has 16 divisors (see below), whose sum is σ = 13441345642368. Its totient is φ = 7200720878400.

The previous prime is 10011002222213. The next prime is 10011002222251. The reversal of 10011002222221 is 12222220011001.

It is a happy number.

It is not a de Polignac number, because 10011002222221 - 2³ = 10011002222213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10011002222195 and 10011002222204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011002222251) 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, 5000499610 + ... + 5000501611.

It is an arithmetic number, because the mean of its divisors is an integer number (840084102648).

Almost surely, 2^{10011002222221} is an apocalyptic number.

10011002222221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10011002222221 is a deficient number, since it is larger than the sum of its proper divisors (3430343420147).

10011002222221 is a wasteful number, since it uses less digits than its factorization.

10011002222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10001001252.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 10011002222221 its reverse (12222220011001), we get a palindrome (22233222233222).

The spelling of 10011002222221 in words is "ten trillion, eleven billion, two million, two hundred twenty-two thousand, two hundred twenty-one".