102121003121 has 2 divisors, whose sum is σ = 102121003122. Its totient is φ = 102121003120.

The previous prime is 102121003091. The next prime is 102121003157. The reversal of 102121003121 is 121300121201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75316764721 + 26804238400 = 274439^2 + 163720^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102121003121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102121003096 and 102121003105.

It is not a weakly prime, because it can be changed into another prime (102121303121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51060501560 + 51060501561.

It is an arithmetic number, because the mean of its divisors is an integer number (51060501561).

Almost surely, 2^102121003121 is an apocalyptic number.

It is an amenable number.

102121003121 is a deficient number, since it is larger than the sum of its proper divisors (1).

102121003121 is an equidigital number, since it uses as much as digits as its factorization.

102121003121 is an evil number, because the sum of its binary digits is even.

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

Adding to 102121003121 its reverse (121300121201), we get a palindrome (223421124322).

The spelling of 102121003121 in words is "one hundred two billion, one hundred twenty-one million, three thousand, one hundred twenty-one".