113121303212 has 24 divisors (see below), whose sum is σ = 199717512960.
Its totient is φ = 56061296640.
The previous prime is 113121303199. The next prime is 113121303263. The reversal of 113121303212 is 212303121311.
It is a happy number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55637 + ... + 478892.
It is an arithmetic number, because the mean of its divisors is an integer number (8321563040).
Almost surely, 2113121303212 is an apocalyptic number.
It is an amenable number.
113121303212 is a deficient number, since it is larger than the sum of its proper divisors (86596209748).
113121303212 is a wasteful number, since it uses less digits than its factorization.
113121303212 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 535001 (or 534999 counting only the distinct ones).
The product of its (nonzero) digits is 216, while the sum is 20.
Adding to 113121303212 its reverse (212303121311), we get a palindrome (325424424523).
The spelling of 113121303212 in words is "one hundred thirteen billion, one hundred twenty-one million, three hundred three thousand, two hundred twelve".