612121201 has 2 divisors, whose sum is σ = 612121202. Its totient is φ = 612121200.

The previous prime is 612121189. The next prime is 612121231. The reversal of 612121201 is 102121216.

612121201 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 can be written as a sum of positive squares in only one way, i.e., 595311201 + 16810000 = 24399^2 + 4100^2 .

It is a cyclic number.

It is not a de Polignac number, because 612121201 - 2⁷ = 612121073 is a prime.

It is not a weakly prime, because it can be changed into another prime (612121231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306060600 + 306060601.

It is an arithmetic number, because the mean of its divisors is an integer number (306060601).

Almost surely, 2^612121201 is an apocalyptic number.

It is an amenable number.

612121201 is a deficient number, since it is larger than the sum of its proper divisors (1).

612121201 is an equidigital number, since it uses as much as digits as its factorization.

612121201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 612121201 is about 24741.0832624604. The cubic root of 612121201 is about 849.0745179582.

Adding to 612121201 its reverse (102121216), we get a palindrome (714242417).

The spelling of 612121201 in words is "six hundred twelve million, one hundred twenty-one thousand, two hundred one".