2151341021 has 2 divisors, whose sum is σ = 2151341022. Its totient is φ = 2151341020.

The previous prime is 2151340979. The next prime is 2151341029. The reversal of 2151341021 is 1201431512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1384881796 + 766459225 = 37214^2 + 27685^2 .

It is a cyclic number.

It is not a de Polignac number, because 2151341021 - 2¹⁸ = 2151078877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2151340984 and 2151341002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2151341029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075670510 + 1075670511.

It is an arithmetic number, because the mean of its divisors is an integer number (1075670511).

Almost surely, 2^2151341021 is an apocalyptic number.

It is an amenable number.

2151341021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151341021 is an equidigital number, since it uses as much as digits as its factorization.

2151341021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 2151341021 is about 46382.5508246366. The cubic root of 2151341021 is about 1290.9311669220.

Adding to 2151341021 its reverse (1201431512), we get a palindrome (3352772533).

The spelling of 2151341021 in words is "two billion, one hundred fifty-one million, three hundred forty-one thousand, twenty-one".