121102302121 has 2 divisors, whose sum is σ = 121102302122. Its totient is φ = 121102302120.

The previous prime is 121102302119. The next prime is 121102302131. The reversal of 121102302121 is 121203201121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69600992400 + 51501309721 = 263820^2 + 226939^2 .

It is an emirp because it is prime and its reverse (121203201121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121102302121 - 2¹ = 121102302119 is a prime.

It is a super-2 number, since 2×121102302121² (a number of 23 digits) contains 22 as substring.

Together with 121102302119, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 121102302095 and 121102302104.

It is not a weakly prime, because it can be changed into another prime (121102302131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60551151060 + 60551151061.

It is an arithmetic number, because the mean of its divisors is an integer number (60551151061).

Almost surely, 2^121102302121 is an apocalyptic number.

It is an amenable number.

121102302121 is a deficient number, since it is larger than the sum of its proper divisors (1).

121102302121 is an equidigital number, since it uses as much as digits as its factorization.

121102302121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 121102302121 its reverse (121203201121), we get a palindrome (242305503242).

The spelling of 121102302121 in words is "one hundred twenty-one billion, one hundred two million, three hundred two thousand, one hundred twenty-one".