202102101121 has 2 divisors, whose sum is σ = 202102101122. Its totient is φ = 202102101120.

The previous prime is 202102101073. The next prime is 202102101169. The reversal of 202102101121 is 121101201202.

It is a balanced prime because it is at equal distance from previous prime (202102101073) and next prime (202102101169).

It can be written as a sum of positive squares in only one way, i.e., 137770880625 + 64331220496 = 371175^2 + 253636^2 .

It is a cyclic number.

It is not a de Polignac number, because 202102101121 - 2⁹ = 202102100609 is a prime.

It is not a weakly prime, because it can be changed into another prime (202102101191) 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, 101051050560 + 101051050561.

It is an arithmetic number, because the mean of its divisors is an integer number (101051050561).

Almost surely, 2^202102101121 is an apocalyptic number.

It is an amenable number.

202102101121 is a deficient number, since it is larger than the sum of its proper divisors (1).

202102101121 is an equidigital number, since it uses as much as digits as its factorization.

202102101121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 202102101121 its reverse (121101201202), we get a palindrome (323203302323).

The spelling of 202102101121 in words is "two hundred two billion, one hundred two million, one hundred one thousand, one hundred twenty-one".