1202111222321 has 2 divisors, whose sum is σ = 1202111222322. Its totient is φ = 1202111222320.

The previous prime is 1202111222239. The next prime is 1202111222339. The reversal of 1202111222321 is 1232221112021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1013976497296 + 188134725025 = 1006964^2 + 433745^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1202111222321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1202111222293 and 1202111222302.

It is not a weakly prime, because it can be changed into another prime (1202111221321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601055611160 + 601055611161.

It is an arithmetic number, because the mean of its divisors is an integer number (601055611161).

Almost surely, 2^{1202111222321} is an apocalyptic number.

It is an amenable number.

1202111222321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202111222321 is an equidigital number, since it uses as much as digits as its factorization.

1202111222321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1202111222321 its reverse (1232221112021), we get a palindrome (2434332334342).

The spelling of 1202111222321 in words is "one trillion, two hundred two billion, one hundred eleven million, two hundred twenty-two thousand, three hundred twenty-one".