1213010201 has 4 divisors (see below), whose sum is σ = 1306318692. Its totient is φ = 1119701712.

The previous prime is 1213010167. The next prime is 1213010207. The reversal of 1213010201 is 1020103121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1020103121 = 3833 ⋅266137.

It can be written as a sum of positive squares in 2 ways, for example, as 698809225 + 514200976 = 26435^2 + 22676^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213010201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213010207) 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 3 ways as a sum of consecutive naturals, for example, 46654226 + ... + 46654251.

It is an arithmetic number, because the mean of its divisors is an integer number (326579673).

Almost surely, 2^1213010201 is an apocalyptic number.

It is an amenable number.

1213010201 is a deficient number, since it is larger than the sum of its proper divisors (93308491).

1213010201 is an equidigital number, since it uses as much as digits as its factorization.

1213010201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93308490.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1213010201 is about 34828.2959818593. The cubic root of 1213010201 is about 1066.4851625523.

Adding to 1213010201 its reverse (1020103121), we get a palindrome (2233113322).

The spelling of 1213010201 in words is "one billion, two hundred thirteen million, ten thousand, two hundred one".