10211020121101 has 4 divisors (see below), whose sum is σ = 10211293626400. Its totient is φ = 10210746615804.

The previous prime is 10211020121077. The next prime is 10211020121171. The reversal of 10211020121101 is 10112102011201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10211020121101 - 2¹⁷ = 10211019990029 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 (10211020121171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136696641 + ... + 136771318.

It is an arithmetic number, because the mean of its divisors is an integer number (2552823406600).

Almost surely, 2^{10211020121101} is an apocalyptic number.

It is an amenable number.

10211020121101 is a deficient number, since it is larger than the sum of its proper divisors (273505299).

10211020121101 is an equidigital number, since it uses as much as digits as its factorization.

10211020121101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273505298.

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

Adding to 10211020121101 its reverse (10112102011201), we get a palindrome (20323122132302).

The spelling of 10211020121101 in words is "ten trillion, two hundred eleven billion, twenty million, one hundred twenty-one thousand, one hundred one".