121312001201 has 4 divisors (see below), whose sum is σ = 121344818532. Its totient is φ = 121279183872.

The previous prime is 121312001197. The next prime is 121312001203. The reversal of 121312001201 is 102100213121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102100213121 = 170063 ⋅600367.

It can be written as a sum of positive squares in 2 ways, for example, as 27357490801 + 93954510400 = 165401^2 + 306520^2 .

It is a cyclic number.

It is not a de Polignac number, because 121312001201 - 2² = 121312001197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121312001203) 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 3 ways as a sum of consecutive naturals, for example, 16403120 + ... + 16410513.

It is an arithmetic number, because the mean of its divisors is an integer number (30336204633).

Almost surely, 2^121312001201 is an apocalyptic number.

It is an amenable number.

121312001201 is a deficient number, since it is larger than the sum of its proper divisors (32817331).

121312001201 is an equidigital number, since it uses as much as digits as its factorization.

121312001201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32817330.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 121312001201 its reverse (102100213121), we get a palindrome (223412214322).

The spelling of 121312001201 in words is "one hundred twenty-one billion, three hundred twelve million, one thousand, two hundred one".