1131123122001 has 64 divisors (see below), whose sum is σ = 1718085600000. Its totient is φ = 735249678336.

The previous prime is 1131123121991. The next prime is 1131123122009. The reversal of 1131123122001 is 1002213211311.

It is not a de Polignac number, because 1131123122001 - 2⁷ = 1131123121873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131123122009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 182524435 + ... + 182530631.

It is an arithmetic number, because the mean of its divisors is an integer number (26845087500).

Almost surely, 2^{1131123122001} is an apocalyptic number.

It is an amenable number.

1131123122001 is a deficient number, since it is larger than the sum of its proper divisors (586962477999).

1131123122001 is a wasteful number, since it uses less digits than its factorization.

1131123122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7183 (or 7177 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1131123122001 its reverse (1002213211311), we get a palindrome (2133336333312).

The spelling of 1131123122001 in words is "one trillion, one hundred thirty-one billion, one hundred twenty-three million, one hundred twenty-two thousand, one".