1030120222121 has 2 divisors, whose sum is σ = 1030120222122. Its totient is φ = 1030120222120.

The previous prime is 1030120222097. The next prime is 1030120222223. The reversal of 1030120222121 is 1212220210301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 767016882025 + 263103340096 = 875795^2 + 512936^2 .

It is an emirp because it is prime and its reverse (1212220210301) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1030120222121 is a prime.

It is a super-2 number, since 2×1030120222121² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1030120222121.

It is not a weakly prime, because it can be changed into another prime (1030120221121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515060111060 + 515060111061.

It is an arithmetic number, because the mean of its divisors is an integer number (515060111061).

Almost surely, 2^{1030120222121} is an apocalyptic number.

It is an amenable number.

1030120222121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1030120222121 is an equidigital number, since it uses as much as digits as its factorization.

1030120222121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1030120222121 its reverse (1212220210301), we get a palindrome (2242340432422).

The spelling of 1030120222121 in words is "one trillion, thirty billion, one hundred twenty million, two hundred twenty-two thousand, one hundred twenty-one".