1002200200121 has 2 divisors, whose sum is σ = 1002200200122. Its totient is φ = 1002200200120.

The previous prime is 1002200200093. The next prime is 1002200200151. The reversal of 1002200200121 is 1210020022001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 734071968400 + 268128231721 = 856780^2 + 517811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002200200121 is a prime.

It is a super-2 number, since 2×1002200200121² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1002200200151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501100100060 + 501100100061.

It is an arithmetic number, because the mean of its divisors is an integer number (501100100061).

Almost surely, 2^{1002200200121} is an apocalyptic number.

It is an amenable number.

1002200200121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002200200121 is an equidigital number, since it uses as much as digits as its factorization.

1002200200121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1002200200121 its reverse (1210020022001), we get a palindrome (2212220222122).

The spelling of 1002200200121 in words is "one trillion, two billion, two hundred million, two hundred thousand, one hundred twenty-one".