1210901201 has 4 divisors (see below), whose sum is σ = 1213791600. Its totient is φ = 1208010804.

The previous prime is 1210901173. The next prime is 1210901207. The reversal of 1210901201 is 1021090121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1210901201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1210901201.

It is not an unprimeable number, because it can be changed into a prime (1210901207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1444571 + ... + 1445408.

It is an arithmetic number, because the mean of its divisors is an integer number (303447900).

Almost surely, 2^1210901201 is an apocalyptic number.

It is an amenable number.

1210901201 is a deficient number, since it is larger than the sum of its proper divisors (2890399).

1210901201 is an equidigital number, since it uses as much as digits as its factorization.

1210901201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2890398.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 1210901201 is about 34798.0057043504. The cubic root of 1210901201 is about 1065.8667225754.

Adding to 1210901201 its reverse (1021090121), we get a palindrome (2231991322).

It can be divided in two parts, 121090120 and 1, that added together give a palindrome (121090121).

The spelling of 1210901201 in words is "one billion, two hundred ten million, nine hundred one thousand, two hundred one".