2051512330121 has 2 divisors, whose sum is σ = 2051512330122. Its totient is φ = 2051512330120.

The previous prime is 2051512330103. The next prime is 2051512330151. The reversal of 2051512330121 is 1210332151502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2016573243721 + 34939086400 = 1420061^2 + 186920^2 .

It is a cyclic number.

It is not a de Polignac number, because 2051512330121 - 2⁶ = 2051512330057 is a prime.

It is not a weakly prime, because it can be changed into another prime (2051512330151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025756165060 + 1025756165061.

It is an arithmetic number, because the mean of its divisors is an integer number (1025756165061).

Almost surely, 2^{2051512330121} is an apocalyptic number.

It is an amenable number.

2051512330121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051512330121 is an equidigital number, since it uses as much as digits as its factorization.

2051512330121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 2051512330121 its reverse (1210332151502), we get a palindrome (3261844481623).

The spelling of 2051512330121 in words is "two trillion, fifty-one billion, five hundred twelve million, three hundred thirty thousand, one hundred twenty-one".