1312122123201 has 32 divisors (see below), whose sum is σ = 1817516671488. Its totient is φ = 841402736640.

The previous prime is 1312122123197. The next prime is 1312122123203. The reversal of 1312122123201 is 1023212212131.

It is not a de Polignac number, because 1312122123201 - 2² = 1312122123197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1312122123203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10404741 + ... + 10530093.

It is an arithmetic number, because the mean of its divisors is an integer number (56797395984).

Almost surely, 2^{1312122123201} is an apocalyptic number.

It is an amenable number.

1312122123201 is a deficient number, since it is larger than the sum of its proper divisors (505394548287).

1312122123201 is a wasteful number, since it uses less digits than its factorization.

1312122123201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126681.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1312122123201 its reverse (1023212212131), we get a palindrome (2335334335332).

The spelling of 1312122123201 in words is "one trillion, three hundred twelve billion, one hundred twenty-two million, one hundred twenty-three thousand, two hundred one".