10101111112221 has 16 divisors (see below), whose sum is σ = 14560160164800. Its totient is φ = 6207226172928.

The previous prime is 10101111112219. The next prime is 10101111112249. The reversal of 10101111112221 is 12221111110101.

10101111112221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10101111112221 - 2¹ = 10101111112219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10101111112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101111112021) 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, 2394761076 + ... + 2394765293.

It is an arithmetic number, because the mean of its divisors is an integer number (910010010300).

Almost surely, 2^{10101111112221} is an apocalyptic number.

It is an amenable number.

10101111112221 is a deficient number, since it is larger than the sum of its proper divisors (4459049052579).

10101111112221 is a wasteful number, since it uses less digits than its factorization.

10101111112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4789526428.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 10101111112221 its reverse (12221111110101), we get a palindrome (22322222222322).

The spelling of 10101111112221 in words is "ten trillion, one hundred one billion, one hundred eleven million, one hundred twelve thousand, two hundred twenty-one".