212520001 has 2 divisors, whose sum is σ = 212520002. Its totient is φ = 212520000.

The previous prime is 212519987. The next prime is 212520029. The reversal of 212520001 is 100025212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141134400 + 71385601 = 11880^2 + 8449^2 .

It is a cyclic number.

It is not a de Polignac number, because 212520001 - 2¹³ = 212511809 is a prime.

It is not a weakly prime, because it can be changed into another prime (212520101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106260000 + 106260001.

It is an arithmetic number, because the mean of its divisors is an integer number (106260001).

Almost surely, 2^212520001 is an apocalyptic number.

It is an amenable number.

212520001 is a deficient number, since it is larger than the sum of its proper divisors (1).

212520001 is an equidigital number, since it uses as much as digits as its factorization.

212520001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 212520001 is about 14578.0657496116. The cubic root of 212520001 is about 596.7603176173.

Adding to 212520001 its reverse (100025212), we get a palindrome (312545213).

The spelling of 212520001 in words is "two hundred twelve million, five hundred twenty thousand, one".