1200123101131 has 2 divisors, whose sum is σ = 1200123101132. Its totient is φ = 1200123101130.

The previous prime is 1200123101077. The next prime is 1200123101147. The reversal of 1200123101131 is 1311013210021.

It is a happy number.

It is an a-pointer prime, because the next prime (1200123101147) can be obtained adding 1200123101131 to its sum of digits (16).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1200123101131 - 2¹¹ = 1200123099083 is a prime.

It is a super-2 number, since 2×1200123101131² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1200123101161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600061550565 + 600061550566.

It is an arithmetic number, because the mean of its divisors is an integer number (600061550566).

Almost surely, 2^{1200123101131} is an apocalyptic number.

1200123101131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200123101131 is an equidigital number, since it uses as much as digits as its factorization.

1200123101131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1200123101131 its reverse (1311013210021), we get a palindrome (2511136311152).

The spelling of 1200123101131 in words is "one trillion, two hundred billion, one hundred twenty-three million, one hundred one thousand, one hundred thirty-one".