1221202222301 has 2 divisors, whose sum is σ = 1221202222302. Its totient is φ = 1221202222300.

The previous prime is 1221202222271. The next prime is 1221202222307. The reversal of 1221202222301 is 1032222021221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 975334008100 + 245868214201 = 987590^2 + 495851^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1221202222301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1221202222307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610601111150 + 610601111151.

It is an arithmetic number, because the mean of its divisors is an integer number (610601111151).

Almost surely, 2^{1221202222301} is an apocalyptic number.

It is an amenable number.

1221202222301 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221202222301 is an equidigital number, since it uses as much as digits as its factorization.

1221202222301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1221202222301 its reverse (1032222021221), we get a palindrome (2253424243522).

The spelling of 1221202222301 in words is "one trillion, two hundred twenty-one billion, two hundred two million, two hundred twenty-two thousand, three hundred one".