1252211201 has 4 divisors (see below), whose sum is σ = 1257585732. Its totient is φ = 1246836672.

The previous prime is 1252211189. The next prime is 1252211203. The reversal of 1252211201 is 1021122521.

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 422713600 + 829497601 = 20560^2 + 28801^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252211201 - 2²⁶ = 1185102337 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 1252211201.

It is not an unprimeable number, because it can be changed into a prime (1252211203) 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, 2686916 + ... + 2687381.

It is an arithmetic number, because the mean of its divisors is an integer number (314396433).

Almost surely, 2^1252211201 is an apocalyptic number.

It is an amenable number.

1252211201 is a deficient number, since it is larger than the sum of its proper divisors (5374531).

1252211201 is an equidigital number, since it uses as much as digits as its factorization.

1252211201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5374530.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 1252211201 is about 35386.5963466395. The cubic root of 1252211201 is about 1077.8521559299.

Adding to 1252211201 its reverse (1021122521), we get a palindrome (2273333722).

The spelling of 1252211201 in words is "one billion, two hundred fifty-two million, two hundred eleven thousand, two hundred one".