10000000011221 has 16 divisors (see below), whose sum is σ = 11048919002880. Its totient is φ = 8974987894080.

The previous prime is 10000000011137. The next prime is 10000000011223. The reversal of 10000000011221 is 12211000000001.

10000000011221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10000000011221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10000000011199 and 10000000011208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10000000011223) 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, 14722541 + ... + 15386786.

It is an arithmetic number, because the mean of its divisors is an integer number (690557437680).

Almost surely, 2^{10000000011221} is an apocalyptic number.

10000000011221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10000000011221 is a deficient number, since it is larger than the sum of its proper divisors (1048918991659).

10000000011221 is a wasteful number, since it uses less digits than its factorization.

10000000011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30109724.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 10000000011221 its reverse (12211000000001), we get a palindrome (22211000011222).

It can be divided in two parts, 1000000001 and 1221, that multiplied together give a palindrome (1221000001221).

The spelling of 10000000011221 in words is "ten trillion, eleven thousand, two hundred twenty-one".