212100011101121 has 32 divisors (see below), whose sum is σ = 251522153358336. Its totient is φ = 176313536712000.

The previous prime is 212100011101109. The next prime is 212100011101123. The reversal of 212100011101121 is 121101110001212.

It is a cyclic number.

It is not a de Polignac number, because 212100011101121 - 2¹⁰ = 212100011100097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212100011101096 and 212100011101105.

It is not an unprimeable number, because it can be changed into a prime (212100011101123) 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, 305841956 + ... + 306534666.

It is an arithmetic number, because the mean of its divisors is an integer number (7860067292448).

Almost surely, 2^{212100011101121} is an apocalyptic number.

It is an amenable number.

212100011101121 is a deficient number, since it is larger than the sum of its proper divisors (39422142257215).

212100011101121 is a wasteful number, since it uses less digits than its factorization.

212100011101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712853.

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

Adding to 212100011101121 its reverse (121101110001212), we get a palindrome (333201121102333).

The spelling of 212100011101121 in words is "two hundred twelve trillion, one hundred billion, eleven million, one hundred one thousand, one hundred twenty-one".