1201212031322 has 4 divisors (see below), whose sum is σ = 1801818046986. Its totient is φ = 600606015660.

The previous prime is 1201212031319. The next prime is 1201212031337. The reversal of 1201212031322 is 2231302121021.

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., 1192723910161 + 8488121161 = 1092119^2 + 92131^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1201212031294 and 1201212031303.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300303007829 + ... + 300303007832.

Almost surely, 2^{1201212031322} is an apocalyptic number.

1201212031322 is a deficient number, since it is larger than the sum of its proper divisors (600606015664).

1201212031322 is an equidigital number, since it uses as much as digits as its factorization.

1201212031322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600606015663.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1201212031322 its reverse (2231302121021), we get a palindrome (3432514152343).

The spelling of 1201212031322 in words is "one trillion, two hundred one billion, two hundred twelve million, thirty-one thousand, three hundred twenty-two".