10011010221 has 48 divisors (see below), whose sum is σ = 15553661760. Its totient is φ = 6192426240.

The previous prime is 10011010193. The next prime is 10011010237. The reversal of 10011010221 is 12201011001.

It is a happy number.

It is not a de Polignac number, because 10011010221 - 2⁶ = 10011010157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011018221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 709986 + ... + 723948.

It is an arithmetic number, because the mean of its divisors is an integer number (324034620).

Almost surely, 2^10011010221 is an apocalyptic number.

It is an amenable number.

10011010221 is a deficient number, since it is larger than the sum of its proper divisors (5542651539).

10011010221 is a wasteful number, since it uses less digits than its factorization.

10011010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14106 (or 14103 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 10011010221 its reverse (12201011001), we get a palindrome (22212021222).

The spelling of 10011010221 in words is "ten billion, eleven million, ten thousand, two hundred twenty-one".