1031221201202 has 4 divisors (see below), whose sum is σ = 1546831801806. Its totient is φ = 515610600600.

The previous prime is 1031221201151. The next prime is 1031221201211. The reversal of 1031221201202 is 2021021221301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 662141865841 + 369079335361 = 813721^2 + 607519^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 257805300299 + ... + 257805300302.

Almost surely, 2^{1031221201202} is an apocalyptic number.

1031221201202 is a deficient number, since it is larger than the sum of its proper divisors (515610600604).

1031221201202 is an equidigital number, since it uses as much as digits as its factorization.

1031221201202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515610600603.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1031221201202 its reverse (2021021221301), we get a palindrome (3052242422503).

The spelling of 1031221201202 in words is "one trillion, thirty-one billion, two hundred twenty-one million, two hundred one thousand, two hundred two".