113222001221 has 16 divisors (see below), whose sum is σ = 130007566080. Its totient is φ = 96590232960.

The previous prime is 113222001209. The next prime is 113222001227. The reversal of 113222001221 is 122100222311.

It is a cyclic number.

It is not a de Polignac number, because 113222001221 - 2⁶ = 113222001157 is a prime.

It is a super-4 number, since 4×113222001221⁴ (a number of 45 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 113222001221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113222001227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1266035 + ... + 1352511.

It is an arithmetic number, because the mean of its divisors is an integer number (8125472880).

Almost surely, 2^113222001221 is an apocalyptic number.

It is an amenable number.

113222001221 is a deficient number, since it is larger than the sum of its proper divisors (16785564859).

113222001221 is an equidigital number, since it uses as much as digits as its factorization.

113222001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87364.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 113222001221 its reverse (122100222311), we get a palindrome (235322223532).

The spelling of 113222001221 in words is "one hundred thirteen billion, two hundred twenty-two million, one thousand, two hundred twenty-one".