10011002221 has 16 divisors (see below), whose sum is σ = 10994393088. Its totient is φ = 9040030000.

The previous prime is 10011002191. The next prime is 10011002257. The reversal of 10011002221 is 12220011001.

It is a cyclic number.

It is not a de Polignac number, because 10011002221 - 2¹³ = 10010994029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10011002198 and 10011002207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011002921) 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, 1052730 + ... + 1062196.

It is an arithmetic number, because the mean of its divisors is an integer number (687149568).

Almost surely, 2^10011002221 is an apocalyptic number.

10011002221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10011002221 is a deficient number, since it is larger than the sum of its proper divisors (983390867).

10011002221 is a wasteful number, since it uses less digits than its factorization.

10011002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10112.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 10011002221 its reverse (12220011001), we get a palindrome (22231013222).

The spelling of 10011002221 in words is "ten billion, eleven million, two thousand, two hundred twenty-one".