113121211002 has 64 divisors (see below), whose sum is σ = 231598569600. Its totient is φ = 36824186880.

The previous prime is 113121210989. The next prime is 113121211009. The reversal of 113121211002 is 200112121311.

It is not an unprimeable number, because it can be changed into a prime (113121211009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33978874 + ... + 33982202.

It is an arithmetic number, because the mean of its divisors is an integer number (3618727650).

Almost surely, 2^113121211002 is an apocalyptic number.

113121211002 is an abundant number, since it is smaller than the sum of its proper divisors (118477358598).

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

113121211002 is a wasteful number, since it uses less digits than its factorization.

113121211002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4031.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 113121211002 its reverse (200112121311), we get a palindrome (313233332313).

The spelling of 113121211002 in words is "one hundred thirteen billion, one hundred twenty-one million, two hundred eleven thousand, two".