1222011210321 has 36 divisors (see below), whose sum is σ = 1971987608500. Its totient is φ = 728471620800.

The previous prime is 1222011210271. The next prime is 1222011210361. The reversal of 1222011210321 is 1230121102221.

1222011210321 is a `hidden beast` number, since 1 + 2 + 220 + 1 + 121 + 0 + 321 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 237986889921 + 984024320400 = 487839^2 + 991980^2 .

It is not a de Polignac number, because 1222011210321 - 2¹³ = 1222011202129 is a prime.

It is a super-2 number, since 2×1222011210321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1222011210294 and 1222011210303.

It is not an unprimeable number, because it can be changed into a prime (1222011210361) by changing a digit.

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 in 35 ways as a sum of consecutive naturals, for example, 9131446 + ... + 9264303.

Almost surely, 2^{1222011210321} is an apocalyptic number.

1222011210321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1222011210321 is a deficient number, since it is larger than the sum of its proper divisors (749976398179).

1222011210321 is a wasteful number, since it uses less digits than its factorization.

1222011210321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18395838 (or 18395824 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1222011210321 its reverse (1230121102221), we get a palindrome (2452132312542).

The spelling of 1222011210321 in words is "one trillion, two hundred twenty-two billion, eleven million, two hundred ten thousand, three hundred twenty-one".