1331312122202 has 4 divisors (see below), whose sum is σ = 1996968183306. Its totient is φ = 665656061100.

The previous prime is 1331312122187. The next prime is 1331312122213. The reversal of 1331312122202 is 2022212131331.

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., 1292589360241 + 38722761961 = 1136921^2 + 196781^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332828030549 + ... + 332828030552.

Almost surely, 2^{1331312122202} is an apocalyptic number.

1331312122202 is a deficient number, since it is larger than the sum of its proper divisors (665656061104).

1331312122202 is an equidigital number, since it uses as much as digits as its factorization.

1331312122202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665656061103.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1331312122202 its reverse (2022212131331), we get a palindrome (3353524253533).

The spelling of 1331312122202 in words is "one trillion, three hundred thirty-one billion, three hundred twelve million, one hundred twenty-two thousand, two hundred two".