2141145521 has 2 divisors, whose sum is σ = 2141145522. Its totient is φ = 2141145520.

The previous prime is 2141145481. The next prime is 2141145527. The reversal of 2141145521 is 1255411412.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2075713600 + 65431921 = 45560^2 + 8089^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2141145521 is a prime.

It is a super-2 number, since 2×2141145521² = 9169008284196722882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2141145527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070572760 + 1070572761.

It is an arithmetic number, because the mean of its divisors is an integer number (1070572761).

Almost surely, 2^2141145521 is an apocalyptic number.

It is an amenable number.

2141145521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2141145521 is an equidigital number, since it uses as much as digits as its factorization.

2141145521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1600, while the sum is 26.

The square root of 2141145521 is about 46272.5136663225. The cubic root of 2141145521 is about 1288.8886369866. Note that the first 3 decimals are identical.

Adding to 2141145521 its reverse (1255411412), we get a palindrome (3396556933).

The spelling of 2141145521 in words is "two billion, one hundred forty-one million, one hundred forty-five thousand, five hundred twenty-one".