1001212010101 has 4 divisors (see below), whose sum is σ = 1017625321804. Its totient is φ = 984798698400.

The previous prime is 1001212010089. The next prime is 1001212010111. The reversal of 1001212010101 is 1010102121001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 82056467025 + 919155543076 = 286455^2 + 958726^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001212010101 - 2²⁷ = 1001077792373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001212010111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8206655760 + ... + 8206655881.

It is an arithmetic number, because the mean of its divisors is an integer number (254406330451).

Almost surely, 2^{1001212010101} is an apocalyptic number.

It is an amenable number.

1001212010101 is a deficient number, since it is larger than the sum of its proper divisors (16413311703).

1001212010101 is an equidigital number, since it uses as much as digits as its factorization.

1001212010101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16413311702.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1001212010101 its reverse (1010102121001), we get a palindrome (2011314131102).

The spelling of 1001212010101 in words is "one trillion, one billion, two hundred twelve million, ten thousand, one hundred one".