2121200300231 has 6 divisors (see below), whose sum is σ = 2196867374832. Its totient is φ = 2048055461480.

The previous prime is 2121200300221. The next prime is 2121200300237. The reversal of 2121200300231 is 1320030021212.

It is a de Polignac number, because none of the positive numbers 2^k-2121200300231 is a prime.

It is a super-2 number, since 2×2121200300231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121200300237) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1261117055 + ... + 1261118736.

It is an arithmetic number, because the mean of its divisors is an integer number (366144562472).

Almost surely, 2^{2121200300231} is an apocalyptic number.

2121200300231 is a deficient number, since it is larger than the sum of its proper divisors (75667074601).

2121200300231 is an equidigital number, since it uses as much as digits as its factorization.

2121200300231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2522235849 (or 2522235820 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 2121200300231 its reverse (1320030021212), we get a palindrome (3441230321443).

The spelling of 2121200300231 in words is "two trillion, one hundred twenty-one billion, two hundred million, three hundred thousand, two hundred thirty-one".