101212201 has 4 divisors (see below), whose sum is σ = 102214404. Its totient is φ = 100210000.

The previous prime is 101212141. The next prime is 101212207. The reversal of 101212201 is 102212101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 100000000 + 1212201 = 10000^2 + 1101^2 .

It is a cyclic number.

It is not a de Polignac number, because 101212201 - 2⁷ = 101212073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101212207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500950 + ... + 501151.

It is an arithmetic number, because the mean of its divisors is an integer number (25553601).

Almost surely, 2^101212201 is an apocalyptic number.

It is an amenable number.

101212201 is a deficient number, since it is larger than the sum of its proper divisors (1002203).

101212201 is a wasteful number, since it uses less digits than its factorization.

101212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002202.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 101212201 is about 10060.4274760072. The cubic root of 101212201 is about 466.0268685350.

Adding to 101212201 its reverse (102212101), we get a palindrome (203424302).

The spelling of 101212201 in words is "one hundred one million, two hundred twelve thousand, two hundred one".