1312021222210 has 16 divisors (see below), whose sum is σ = 2371773990456. Its totient is φ = 522556091008.

The previous prime is 1312021222199. The next prime is 1312021222217. The reversal of 1312021222210 is 122221202131.

It can be written as a sum of positive squares in 4 ways, for example, as 736642841841 + 575378380369 = 858279^2 + 758537^2 .

It is not an unprimeable number, because it can be changed into a prime (1312021222217) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 281547289 + ... + 281551948.

Almost surely, 2^{1312021222210} is an apocalyptic number.

1312021222210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312021222210 is a deficient number, since it is larger than the sum of its proper divisors (1059752768246).

1312021222210 is a wasteful number, since it uses less digits than its factorization.

1312021222210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563099477.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1312021222210 its reverse (122221202131), we get a palindrome (1434242424341).

The spelling of 1312021222210 in words is "one trillion, three hundred twelve billion, twenty-one million, two hundred twenty-two thousand, two hundred ten".