10211111200121 has 32 divisors (see below), whose sum is σ = 11527195034880. Its totient is φ = 8974593010944.

The previous prime is 10211111200049. The next prime is 10211111200139. The reversal of 10211111200121 is 12100211111201.

It is not a de Polignac number, because 10211111200121 - 2¹⁸ = 10211110937977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10211111200096 and 10211111200105.

It is not an unprimeable number, because it can be changed into a prime (10211111200141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 630735695 + ... + 630751883.

It is an arithmetic number, because the mean of its divisors is an integer number (360224844840).

Almost surely, 2^{10211111200121} is an apocalyptic number.

It is an amenable number.

10211111200121 is a deficient number, since it is larger than the sum of its proper divisors (1316083834759).

10211111200121 is a wasteful number, since it uses less digits than its factorization.

10211111200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25745.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 10211111200121 its reverse (12100211111201), we get a palindrome (22311322311322).

The spelling of 10211111200121 in words is "ten trillion, two hundred eleven billion, one hundred eleven million, two hundred thousand, one hundred twenty-one".