10011012221 has 8 divisors (see below), whose sum is σ = 11442031680. Its totient is φ = 8580211488.

The previous prime is 10011012211. The next prime is 10011012229. The reversal of 10011012221 is 12221011001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10011012221 - 2⁶ = 10011012157 is a prime.

It is a super-2 number, since 2×10011012221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011012229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59225 + ... + 153393.

It is an arithmetic number, because the mean of its divisors is an integer number (1430253960).

Almost surely, 2^10011012221 is an apocalyptic number.

It is an amenable number.

10011012221 is a deficient number, since it is larger than the sum of its proper divisors (1431019459).

10011012221 is an equidigital number, since it uses as much as digits as its factorization.

10011012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109363.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10011012221 its reverse (12221011001), we get a palindrome (22232023222).

The spelling of 10011012221 in words is "ten billion, eleven million, twelve thousand, two hundred twenty-one".