2121130023 has 8 divisors (see below), whose sum is σ = 2842827888. Its totient is φ = 1406759424.

The previous prime is 2121130009. The next prime is 2121130031. The reversal of 2121130023 is 3200311212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2121130023 - 2⁹ = 2121129511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121129984 and 2121130011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121130073) 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, 1831140 + ... + 1832297.

It is an arithmetic number, because the mean of its divisors is an integer number (355353486).

Almost surely, 2^2121130023 is an apocalyptic number.

2121130023 is a deficient number, since it is larger than the sum of its proper divisors (721697865).

2121130023 is a wasteful number, since it uses less digits than its factorization.

2121130023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3663633.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2121130023 is about 46055.7273637058. The cubic root of 2121130023 is about 1284.8598661196.

Adding to 2121130023 its reverse (3200311212), we get a palindrome (5321441235).

The spelling of 2121130023 in words is "two billion, one hundred twenty-one million, one hundred thirty thousand, twenty-three".