1202121113 has 2 divisors, whose sum is σ = 1202121114. Its totient is φ = 1202121112.

The previous prime is 1202121103. The next prime is 1202121191. The reversal of 1202121113 is 3111212021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 758892304 + 443228809 = 27548^2 + 21053^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202121113 - 2⁶ = 1202121049 is a prime.

It is not a weakly prime, because it can be changed into another prime (1202121103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601060556 + 601060557.

It is an arithmetic number, because the mean of its divisors is an integer number (601060557).

Almost surely, 2^1202121113 is an apocalyptic number.

It is an amenable number.

1202121113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202121113 is an equidigital number, since it uses as much as digits as its factorization.

1202121113 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.

The square root of 1202121113 is about 34671.6182633577. The cubic root of 1202121113 is about 1063.2843170006.

Adding to 1202121113 its reverse (3111212021), we get a palindrome (4313333134).

The spelling of 1202121113 in words is "one billion, two hundred two million, one hundred twenty-one thousand, one hundred thirteen".