113222221221 has 16 divisors (see below), whose sum is σ = 156785112000. Its totient is φ = 72616249728.

The previous prime is 113222221219. The next prime is 113222221223. The reversal of 113222221221 is 122122222311.

It is an interprime number because it is at equal distance from previous prime (113222221219) and next prime (113222221223).

It is not a de Polignac number, because 113222221221 - 2¹ = 113222221219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113222221223) 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, 5720571 + ... + 5740328.

It is an arithmetic number, because the mean of its divisors is an integer number (9799069500).

Almost surely, 2^113222221221 is an apocalyptic number.

It is an amenable number.

113222221221 is a deficient number, since it is larger than the sum of its proper divisors (43562890779).

113222221221 is a wasteful number, since it uses less digits than its factorization.

113222221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11461028.

The product of its digits is 384, while the sum is 21.

Adding to 113222221221 its reverse (122122222311), we get a palindrome (235344443532).

The spelling of 113222221221 in words is "one hundred thirteen billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred twenty-one".