211201121102121 has 64 divisors (see below), whose sum is σ = 340087409049600. Its totient is φ = 129047607216000.

The previous prime is 211201121102093. The next prime is 211201121102141. The reversal of 211201121102121 is 121201121102112.

It is a happy number.

211201121102121 is a `hidden beast` number, since 211 + 20 + 11 + 211 + 0 + 212 + 1 = 666.

It is not a de Polignac number, because 211201121102121 - 2¹⁰ = 211201121101097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211201121102094 and 211201121102103.

It is not an unprimeable number, because it can be changed into a prime (211201121102141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 49757296 + ... + 53834846.

It is an arithmetic number, because the mean of its divisors is an integer number (5313865766400).

Almost surely, 2^{211201121102121} is an apocalyptic number.

It is an amenable number.

211201121102121 is a deficient number, since it is larger than the sum of its proper divisors (128886287947479).

211201121102121 is a wasteful number, since it uses less digits than its factorization.

211201121102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4080867 (or 4080861 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 211201121102121 its reverse (121201121102112), we get a palindrome (332402242204233).

Subtracting from 211201121102121 its reverse (121201121102112), we obtain a palindrome (90000000000009).

The spelling of 211201121102121 in words is "two hundred eleven trillion, two hundred one billion, one hundred twenty-one million, one hundred two thousand, one hundred twenty-one".