113203121202 has 24 divisors (see below), whose sum is σ = 245306611836. Its totient is φ = 37729268736.

The previous prime is 113203121183. The next prime is 113203121219. The reversal of 113203121202 is 202121302311.

113203121202 is a `hidden beast` number, since 11 + 320 + 312 + 1 + 20 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 110184827481 + 3018293721 = 331941^2 + 54939^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 287463 + ... + 555914.

Almost surely, 2^113203121202 is an apocalyptic number.

113203121202 is an abundant number, since it is smaller than the sum of its proper divisors (132103490634).

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

113203121202 is a wasteful number, since it uses less digits than its factorization.

113203121202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850842 (or 850839 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 113203121202 its reverse (202121302311), we get a palindrome (315324423513).

The spelling of 113203121202 in words is "one hundred thirteen billion, two hundred three million, one hundred twenty-one thousand, two hundred two".