1220012022321 has 12 divisors (see below), whose sum is σ = 1766045726848. Its totient is φ = 811584668664.

The previous prime is 1220012022301. The next prime is 1220012022353. The reversal of 1220012022321 is 1232202100221.

1220012022321 is a `hidden beast` number, since 1 + 2 + 200 + 120 + 22 + 321 = 666.

It is not a de Polignac number, because 1220012022321 - 2²⁹ = 1219475151409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220012022294 and 1220012022303.

It is not an unprimeable number, because it can be changed into a prime (1220012022301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146385565 + ... + 146393898.

Almost surely, 2^{1220012022321} is an apocalyptic number.

It is an amenable number.

1220012022321 is a deficient number, since it is larger than the sum of its proper divisors (546033704527).

1220012022321 is a wasteful number, since it uses less digits than its factorization.

1220012022321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292779932 (or 292779929 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1220012022321 its reverse (1232202100221), we get a palindrome (2452214122542).

The spelling of 1220012022321 in words is "one trillion, two hundred twenty billion, twelve million, twenty-two thousand, three hundred twenty-one".