121030031123123 has 2 divisors, whose sum is σ = 121030031123124. Its totient is φ = 121030031123122.

The previous prime is 121030031123107. The next prime is 121030031123137. The reversal of 121030031123123 is 321321130030121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121030031123123 - 2⁴ = 121030031123107 is a prime.

It is not a weakly prime, because it can be changed into another prime (121038031123123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60515015561561 + 60515015561562.

It is an arithmetic number, because the mean of its divisors is an integer number (60515015561562).

Almost surely, 2^{121030031123123} is an apocalyptic number.

121030031123123 is a deficient number, since it is larger than the sum of its proper divisors (1).

121030031123123 is an equidigital number, since it uses as much as digits as its factorization.

121030031123123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 121030031123123 its reverse (321321130030121), we get a palindrome (442351161153244).

The spelling of 121030031123123 in words is "one hundred twenty-one trillion, thirty billion, thirty-one million, one hundred twenty-three thousand, one hundred twenty-three".