1201001212123 has 2 divisors, whose sum is σ = 1201001212124. Its totient is φ = 1201001212122.

The previous prime is 1201001212087. The next prime is 1201001212133. The reversal of 1201001212123 is 3212121001021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1201001212123 - 2¹⁷ = 1201001081051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201001212097 and 1201001212106.

It is not a weakly prime, because it can be changed into another prime (1201001212133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600500606061 + 600500606062.

It is an arithmetic number, because the mean of its divisors is an integer number (600500606062).

Almost surely, 2^{1201001212123} is an apocalyptic number.

1201001212123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201001212123 is an equidigital number, since it uses as much as digits as its factorization.

1201001212123 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1201001212123 its reverse (3212121001021), we get a palindrome (4413122213144).

The spelling of 1201001212123 in words is "one trillion, two hundred one billion, one million, two hundred twelve thousand, one hundred twenty-three".