13222200121 has 4 divisors (see below), whose sum is σ = 14239292452. Its totient is φ = 12205107792.

The previous prime is 13222200067. The next prime is 13222200127. The reversal of 13222200121 is 12100222231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2955444496 + 10266755625 = 54364^2 + 101325^2 .

It is a cyclic number.

It is not a de Polignac number, because 13222200121 - 2⁹ = 13222199609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13222200095 and 13222200104.

It is not an unprimeable number, because it can be changed into a prime (13222200127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508546146 + ... + 508546171.

It is an arithmetic number, because the mean of its divisors is an integer number (3559823113).

Almost surely, 2^13222200121 is an apocalyptic number.

It is an amenable number.

13222200121 is a deficient number, since it is larger than the sum of its proper divisors (1017092331).

13222200121 is a wasteful number, since it uses less digits than its factorization.

13222200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017092330.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 13222200121 its reverse (12100222231), we get a palindrome (25322422352).

The spelling of 13222200121 in words is "thirteen billion, two hundred twenty-two million, two hundred thousand, one hundred twenty-one".