2130000120121 has 4 divisors (see below), whose sum is σ = 2255294244852. Its totient is φ = 2004705995392.

The previous prime is 2130000120071. The next prime is 2130000120133. The reversal of 2130000120121 is 1210210000312.

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 2002193870121 + 127806250000 = 1414989^2 + 357500^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130000120121 - 2⁷ = 2130000119993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2130000120191) 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, 62647062340 + ... + 62647062373.

It is an arithmetic number, because the mean of its divisors is an integer number (563823561213).

Almost surely, 2^{2130000120121} is an apocalyptic number.

It is an amenable number.

2130000120121 is a deficient number, since it is larger than the sum of its proper divisors (125294124731).

2130000120121 is a wasteful number, since it uses less digits than its factorization.

2130000120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125294124730.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 2130000120121 its reverse (1210210000312), we get a palindrome (3340210120433).

The spelling of 2130000120121 in words is "two trillion, one hundred thirty billion, one hundred twenty thousand, one hundred twenty-one".