1201020012101 has 16 divisors (see below), whose sum is σ = 1492529735424. Its totient is φ = 941031782784.

The previous prime is 1201020012067. The next prime is 1201020012139. The reversal of 1201020012101 is 1012100201021.

It is a cyclic number.

It is not a de Polignac number, because 1201020012101 - 2¹⁰ = 1201020011077 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201020012161) 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 15 ways as a sum of consecutive naturals, for example, 64058696 + ... + 64077441.

It is an arithmetic number, because the mean of its divisors is an integer number (93283108464).

Almost surely, 2^{1201020012101} is an apocalyptic number.

It is an amenable number.

1201020012101 is a deficient number, since it is larger than the sum of its proper divisors (291509723323).

1201020012101 is a wasteful number, since it uses less digits than its factorization.

1201020012101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128136260.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1201020012101 its reverse (1012100201021), we get a palindrome (2213120213122).

The spelling of 1201020012101 in words is "one trillion, two hundred one billion, twenty million, twelve thousand, one hundred one".