2121300031238 has 16 divisors (see below), whose sum is σ = 3256360673280. Its totient is φ = 1035852712776.

The previous prime is 2121300031237. The next prime is 2121300031241. The reversal of 2121300031238 is 8321300031212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121300031237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 874118 + ... + 2237561.

It is an arithmetic number, because the mean of its divisors is an integer number (203522542080).

Almost surely, 2^{2121300031238} is an apocalyptic number.

2121300031238 is a deficient number, since it is larger than the sum of its proper divisors (1135060642042).

2121300031238 is a wasteful number, since it uses less digits than its factorization.

2121300031238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3119651.

The product of its (nonzero) digits is 1728, while the sum is 26.

Subtracting from 2121300031238 its sum of digits (26), we obtain a palindrome (2121300031212).

The spelling of 2121300031238 in words is "two trillion, one hundred twenty-one billion, three hundred million, thirty-one thousand, two hundred thirty-eight".