10001021121211 has 8 divisors (see below), whose sum is σ = 10096707213648. Its totient is φ = 9905628096000.

The previous prime is 10001021121103. The next prime is 10001021121227. The reversal of 10001021121211 is 11212112010001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10001021121211 - 2¹³ = 10001021113019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10001021121191 and 10001021121200.

It is not an unprimeable number, because it can be changed into a prime (10001021121271) 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 7 ways as a sum of consecutive naturals, for example, 73198230 + ... + 73334731.

It is an arithmetic number, because the mean of its divisors is an integer number (1262088401706).

Almost surely, 2^{10001021121211} is an apocalyptic number.

10001021121211 is a deficient number, since it is larger than the sum of its proper divisors (95686092437).

10001021121211 is a wasteful number, since it uses less digits than its factorization.

10001021121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146533613.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10001021121211 its reverse (11212112010001), we get a palindrome (21213133131212).

The spelling of 10001021121211 in words is "ten trillion, one billion, twenty-one million, one hundred twenty-one thousand, two hundred eleven".