1021301200121 has 2 divisors, whose sum is σ = 1021301200122. Its totient is φ = 1021301200120.

The previous prime is 1021301200097. The next prime is 1021301200133. The reversal of 1021301200121 is 1210021031201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 802708483600 + 218592716521 = 895940^2 + 467539^2 .

It is an emirp because it is prime and its reverse (1210021031201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1021301200121 - 2²⁶ = 1021234091257 is a prime.

It is a super-2 number, since 2×1021301200121² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1021301200096 and 1021301200105.

It is not a weakly prime, because it can be changed into another prime (1021301200151) 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, 510650600060 + 510650600061.

It is an arithmetic number, because the mean of its divisors is an integer number (510650600061).

Almost surely, 2^{1021301200121} is an apocalyptic number.

It is an amenable number.

1021301200121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021301200121 is an equidigital number, since it uses as much as digits as its factorization.

1021301200121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1021301200121 its reverse (1210021031201), we get a palindrome (2231322231322).

The spelling of 1021301200121 in words is "one trillion, twenty-one billion, three hundred one million, two hundred thousand, one hundred twenty-one".