1211075252 has 6 divisors (see below), whose sum is σ = 2119381698. Its totient is φ = 605537624.

The previous prime is 1211075237. The next prime is 1211075269. The reversal of 1211075252 is 2525701121.

It can be written as a sum of positive squares in only one way, i.e., 1205895076 + 5180176 = 34726^2 + 2276^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151384403 + ... + 151384410.

It is an arithmetic number, because the mean of its divisors is an integer number (353230283).

Almost surely, 2^1211075252 is an apocalyptic number.

It is an amenable number.

1211075252 is a deficient number, since it is larger than the sum of its proper divisors (908306446).

1211075252 is a wasteful number, since it uses less digits than its factorization.

1211075252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302768817 (or 302768815 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 1211075252 is about 34800.5064905671. The cubic root of 1211075252 is about 1065.9177882008.

Adding to 1211075252 its reverse (2525701121), we get a palindrome (3736776373).

The spelling of 1211075252 in words is "one billion, two hundred eleven million, seventy-five thousand, two hundred fifty-two".