212521051 has 2 divisors, whose sum is σ = 212521052. Its totient is φ = 212521050.

The previous prime is 212521037. The next prime is 212521073. The reversal of 212521051 is 150125212.

212521051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212521051 - 2²³ = 204132443 is a prime.

It is not a weakly prime, because it can be changed into another prime (212521091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106260525 + 106260526.

It is an arithmetic number, because the mean of its divisors is an integer number (106260526).

Almost surely, 2^212521051 is an apocalyptic number.

212521051 is a deficient number, since it is larger than the sum of its proper divisors (1).

212521051 is an equidigital number, since it uses as much as digits as its factorization.

212521051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 212521051 is about 14578.1017625753. The cubic root of 212521051 is about 596.7613004226.

Adding to 212521051 its reverse (150125212), we get a palindrome (362646263).

The spelling of 212521051 in words is "two hundred twelve million, five hundred twenty-one thousand, fifty-one".