1021201252 has 12 divisors (see below), whose sum is σ = 1788623676. Its totient is φ = 510165920.

The previous prime is 1021201243. The next prime is 1021201253. The reversal of 1021201252 is 2521021201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 603979776 + 417221476 = 24576^2 + 20426^2 .

It is not an unprimeable number, because it can be changed into a prime (1021201253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103363 + ... + 112810.

It is an arithmetic number, because the mean of its divisors is an integer number (149051973).

Almost surely, 2^1021201252 is an apocalyptic number.

It is an amenable number.

1021201252 is a deficient number, since it is larger than the sum of its proper divisors (767422424).

1021201252 is a wasteful number, since it uses less digits than its factorization.

1021201252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217358 (or 217356 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1021201252 is about 31956.2396411092. The cubic root of 1021201252 is about 1007.0177203966.

Adding to 1021201252 its reverse (2521021201), we get a palindrome (3542222453).

The spelling of 1021201252 in words is "one billion, twenty-one million, two hundred one thousand, two hundred fifty-two".