1221100030301 has 2 divisors, whose sum is σ = 1221100030302. Its totient is φ = 1221100030300.

The previous prime is 1221100030291. The next prime is 1221100030307. The reversal of 1221100030301 is 1030300011221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 954148008025 + 266952022276 = 976805^2 + 516674^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1221100030301 is a prime.

It is a super-2 number, since 2×1221100030301² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1221100030307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610550015150 + 610550015151.

It is an arithmetic number, because the mean of its divisors is an integer number (610550015151).

Almost surely, 2^{1221100030301} is an apocalyptic number.

It is an amenable number.

1221100030301 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221100030301 is an equidigital number, since it uses as much as digits as its factorization.

1221100030301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 1221100030301 its reverse (1030300011221), we get a palindrome (2251400041522).

The spelling of 1221100030301 in words is "one trillion, two hundred twenty-one billion, one hundred million, thirty thousand, three hundred one".