2130151421 has 2 divisors, whose sum is σ = 2130151422. Its totient is φ = 2130151420.

The previous prime is 2130151411. The next prime is 2130151447. The reversal of 2130151421 is 1241510312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1324159321 + 805992100 = 36389^2 + 28390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2130151421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2130151393 and 2130151402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2130151411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065075710 + 1065075711.

It is an arithmetic number, because the mean of its divisors is an integer number (1065075711).

Almost surely, 2^2130151421 is an apocalyptic number.

It is an amenable number.

2130151421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130151421 is an equidigital number, since it uses as much as digits as its factorization.

2130151421 is an evil number, because the sum of its binary digits is even.

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

The square root of 2130151421 is about 46153.5634702241. The cubic root of 2130151421 is about 1286.6788396374.

Adding to 2130151421 its reverse (1241510312), we get a palindrome (3371661733).

The spelling of 2130151421 in words is "two billion, one hundred thirty million, one hundred fifty-one thousand, four hundred twenty-one".