101113212221 has 16 divisors (see below), whose sum is σ = 124664085504. Its totient is φ = 80031254784.

The previous prime is 101113212127. The next prime is 101113212251. The reversal of 101113212221 is 122212311101.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 101113212221 - 2¹⁴ = 101113195837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 101113212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101113212251) 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, 8009645 + ... + 8022258.

It is an arithmetic number, because the mean of its divisors is an integer number (7791505344).

Almost surely, 2^101113212221 is an apocalyptic number.

It is an amenable number.

101113212221 is a deficient number, since it is larger than the sum of its proper divisors (23550873283).

101113212221 is a wasteful number, since it uses less digits than its factorization.

101113212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16031980.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 101113212221 its reverse (122212311101), we get a palindrome (223325523322).

The spelling of 101113212221 in words is "one hundred one billion, one hundred thirteen million, two hundred twelve thousand, two hundred twenty-one".