61212201 has 8 divisors (see below), whose sum is σ = 82027200. Its totient is φ = 40602672.

The previous prime is 61212187. The next prime is 61212211. The reversal of 61212201 is 10221216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61212201 - 2⁵ = 61212169 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61212211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50670 + ... + 51863.

It is an arithmetic number, because the mean of its divisors is an integer number (10253400).

Almost surely, 2^61212201 is an apocalyptic number.

It is an amenable number.

61212201 is a deficient number, since it is larger than the sum of its proper divisors (20814999).

61212201 is a wasteful number, since it uses less digits than its factorization.

61212201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102735.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 61212201 is about 7823.8226590331. The cubic root of 61212201 is about 394.1056537669.

Adding to 61212201 its reverse (10221216), we get a palindrome (71433417).

The spelling of 61212201 in words is "sixty-one million, two hundred twelve thousand, two hundred one".