121302102123 has 8 divisors (see below), whose sum is σ = 179706818000. Its totient is φ = 80868068064.

The previous prime is 121302102121. The next prime is 121302102133. The reversal of 121302102123 is 321201203121.

It is not a de Polignac number, because 121302102123 - 2¹ = 121302102121 is a prime.

It is a super-2 number, since 2×121302102123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121302102096 and 121302102105.

It is not an unprimeable number, because it can be changed into a prime (121302102121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2246335198 + ... + 2246335251.

It is an arithmetic number, because the mean of its divisors is an integer number (22463352250).

Almost surely, 2^121302102123 is an apocalyptic number.

121302102123 is a deficient number, since it is larger than the sum of its proper divisors (58404715877).

121302102123 is an equidigital number, since it uses as much as digits as its factorization.

121302102123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4492670458 (or 4492670452 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 121302102123 its reverse (321201203121), we get a palindrome (442503305244).

The spelling of 121302102123 in words is "one hundred twenty-one billion, three hundred two million, one hundred two thousand, one hundred twenty-three".