2121233130101 has 4 divisors (see below), whose sum is σ = 2130496157100. Its totient is φ = 2111970103104.

The previous prime is 2121233130043. The next prime is 2121233130167. The reversal of 2121233130101 is 1010313321212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1781197198225 + 340035931876 = 1334615^2 + 583126^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121233130101 - 2¹⁰ = 2121233129077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121233130001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4631513156 + ... + 4631513613.

It is an arithmetic number, because the mean of its divisors is an integer number (532624039275).

Almost surely, 2^{2121233130101} is an apocalyptic number.

It is an amenable number.

2121233130101 is a deficient number, since it is larger than the sum of its proper divisors (9263026999).

2121233130101 is an equidigital number, since it uses as much as digits as its factorization.

2121233130101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9263026998.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 2121233130101 its reverse (1010313321212), we get a palindrome (3131546451313).

The spelling of 2121233130101 in words is "two trillion, one hundred twenty-one billion, two hundred thirty-three million, one hundred thirty thousand, one hundred one".