2121021102231 has 6 divisors (see below), whose sum is σ = 3063697147680. Its totient is φ = 1414014068148.

The previous prime is 2121021102217. The next prime is 2121021102241. The reversal of 2121021102231 is 1322011201212.

2121021102231 is a `hidden beast` number, since 21 + 210 + 211 + 0 + 223 + 1 = 666.

It is not a de Polignac number, because 2121021102231 - 2⁵ = 2121021102199 is a prime.

It is a super-2 number, since 2×2121021102231² (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 (2121021102241) 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, 117834505671 + ... + 117834505688.

It is an arithmetic number, because the mean of its divisors is an integer number (510616191280).

Almost surely, 2^{2121021102231} is an apocalyptic number.

2121021102231 is a deficient number, since it is larger than the sum of its proper divisors (942676045449).

2121021102231 is a wasteful number, since it uses less digits than its factorization.

2121021102231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235669011365 (or 235669011362 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2121021102231 its reverse (1322011201212), we get a palindrome (3443032303443).

The spelling of 2121021102231 in words is "two trillion, one hundred twenty-one billion, twenty-one million, one hundred two thousand, two hundred thirty-one".