1210123020103 has 2 divisors, whose sum is σ = 1210123020104. Its totient is φ = 1210123020102.

The previous prime is 1210123020091. The next prime is 1210123020107. The reversal of 1210123020103 is 3010203210121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1210123020103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1210123020107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605061510051 + 605061510052.

It is an arithmetic number, because the mean of its divisors is an integer number (605061510052).

Almost surely, 2^{1210123020103} is an apocalyptic number.

1210123020103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210123020103 is an equidigital number, since it uses as much as digits as its factorization.

1210123020103 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 16.

Adding to 1210123020103 its reverse (3010203210121), we get a palindrome (4220326230224).

The spelling of 1210123020103 in words is "one trillion, two hundred ten billion, one hundred twenty-three million, twenty thousand, one hundred three".