521214011 has 2 divisors, whose sum is σ = 521214012. Its totient is φ = 521214010.

The previous prime is 521213963. The next prime is 521214041. The reversal of 521214011 is 110412125.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 521214011 - 2²⁶ = 454105147 is a prime.

It is not a weakly prime, because it can be changed into another prime (521214041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260607005 + 260607006.

It is an arithmetic number, because the mean of its divisors is an integer number (260607006).

Almost surely, 2^521214011 is an apocalyptic number.

521214011 is a deficient number, since it is larger than the sum of its proper divisors (1).

521214011 is an equidigital number, since it uses as much as digits as its factorization.

521214011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 521214011 is about 22830.1119357746. Note that the first 3 decimals coincide. The cubic root of 521214011 is about 804.7704608979.

Adding to 521214011 its reverse (110412125), we get a palindrome (631626136).

The spelling of 521214011 in words is "five hundred twenty-one million, two hundred fourteen thousand, eleven".