1201012031123 has 2 divisors, whose sum is σ = 1201012031124. Its totient is φ = 1201012031122.

The previous prime is 1201012031119. The next prime is 1201012031189. The reversal of 1201012031123 is 3211302101021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201012031123 - 2² = 1201012031119 is a prime.

It is a super-2 number, since 2×1201012031123² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1201012031113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600506015561 + 600506015562.

It is an arithmetic number, because the mean of its divisors is an integer number (600506015562).

Almost surely, 2^{1201012031123} is an apocalyptic number.

1201012031123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201012031123 is an equidigital number, since it uses as much as digits as its factorization.

1201012031123 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 1201012031123 its reverse (3211302101021), we get a palindrome (4412314132144).

The spelling of 1201012031123 in words is "one trillion, two hundred one billion, twelve million, thirty-one thousand, one hundred twenty-three".