1031012221322 has 4 divisors (see below), whose sum is σ = 1546518331986. Its totient is φ = 515506110660.

The previous prime is 1031012221231. The next prime is 1031012221331. The reversal of 1031012221322 is 2231222101301.

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., 754168928041 + 276843293281 = 868429^2 + 526159^2 .

It is a super-2 number, since 2×1031012221322² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1031012221294 and 1031012221303.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257753055329 + ... + 257753055332.

Almost surely, 2^{1031012221322} is an apocalyptic number.

1031012221322 is a deficient number, since it is larger than the sum of its proper divisors (515506110664).

1031012221322 is an equidigital number, since it uses as much as digits as its factorization.

1031012221322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515506110663.

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

Adding to 1031012221322 its reverse (2231222101301), we get a palindrome (3262234322623).

The spelling of 1031012221322 in words is "one trillion, thirty-one billion, twelve million, two hundred twenty-one thousand, three hundred twenty-two".