113212221342 has 64 divisors (see below), whose sum is σ = 253803967488. Its totient is φ = 33363792000.

The previous prime is 113212221341. The next prime is 113212221377. The reversal of 113212221342 is 243122212311.

It is a super-2 number, since 2×113212221342² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113212221341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5804667 + ... + 5824137.

It is an arithmetic number, because the mean of its divisors is an integer number (3965686992).

Almost surely, 2^113212221342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113212221342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126901983744).

113212221342 is an abundant number, since it is smaller than the sum of its proper divisors (140591746146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

113212221342 is a wasteful number, since it uses less digits than its factorization.

113212221342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21905.

The product of its digits is 1152, while the sum is 24.

Adding to 113212221342 its reverse (243122212311), we get a palindrome (356334433653).

The spelling of 113212221342 in words is "one hundred thirteen billion, two hundred twelve million, two hundred twenty-one thousand, three hundred forty-two".