121013201123 has 2 divisors, whose sum is σ = 121013201124. Its totient is φ = 121013201122.

The previous prime is 121013201107. The next prime is 121013201129. The reversal of 121013201123 is 321102310121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121013201123 - 2⁴ = 121013201107 is a prime.

It is a super-2 number, since 2×121013201123² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121013201129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60506600561 + 60506600562.

It is an arithmetic number, because the mean of its divisors is an integer number (60506600562).

Almost surely, 2^121013201123 is an apocalyptic number.

121013201123 is a deficient number, since it is larger than the sum of its proper divisors (1).

121013201123 is an equidigital number, since it uses as much as digits as its factorization.

121013201123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 121013201123 its reverse (321102310121), we get a palindrome (442115511244).

The spelling of 121013201123 in words is "one hundred twenty-one billion, thirteen million, two hundred one thousand, one hundred twenty-three".