1221002201053 has 2 divisors, whose sum is σ = 1221002201054. Its totient is φ = 1221002201052.

The previous prime is 1221002200933. The next prime is 1221002201101. The reversal of 1221002201053 is 3501022001221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1173109942404 + 47892258649 = 1083102^2 + 218843^2 .

It is a cyclic number.

It is not a de Polignac number, because 1221002201053 - 2⁹ = 1221002200541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1221002201053.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1221002208053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610501100526 + 610501100527.

It is an arithmetic number, because the mean of its divisors is an integer number (610501100527).

Almost surely, 2^{1221002201053} is an apocalyptic number.

It is an amenable number.

1221002201053 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221002201053 is an equidigital number, since it uses as much as digits as its factorization.

1221002201053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 1221002201053 its reverse (3501022001221), we get a palindrome (4722024202274).

The spelling of 1221002201053 in words is "one trillion, two hundred twenty-one billion, two million, two hundred one thousand, fifty-three".