2130056121 has 8 divisors (see below), whose sum is σ = 2900502144. Its totient is φ = 1389823760.

The previous prime is 2130056111. The next prime is 2130056147. The reversal of 2130056121 is 1216500312.

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

It is a cyclic number.

It is not a de Polignac number, because 2130056121 - 2³⁰ = 1056314297 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2130056101) 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, 7553250 + ... + 7553531.

It is an arithmetic number, because the mean of its divisors is an integer number (362562768).

Almost surely, 2^2130056121 is an apocalyptic number.

It is an amenable number.

2130056121 is a deficient number, since it is larger than the sum of its proper divisors (770446023).

2130056121 is a wasteful number, since it uses less digits than its factorization.

2130056121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15106831.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 2130056121 is about 46152.5310356864. The cubic root of 2130056121 is about 1286.6596512798.

Adding to 2130056121 its reverse (1216500312), we get a palindrome (3346556433).

It can be divided in two parts, 21300 and 56121, that added together give a triangular number (77421 = T₃₉₃).

The spelling of 2130056121 in words is "two billion, one hundred thirty million, fifty-six thousand, one hundred twenty-one".