211020121232121 has 8 divisors (see below), whose sum is σ = 285322980821184. Its totient is φ = 138698671232240.

The previous prime is 211020121232083. The next prime is 211020121232171. The reversal of 211020121232121 is 121232121020112.

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 211020121232121 - 2¹⁰ = 211020121231097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211020121232171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 495352397046 + ... + 495352397471.

It is an arithmetic number, because the mean of its divisors is an integer number (35665372602648).

Almost surely, 2^{211020121232121} is an apocalyptic number.

It is an amenable number.

211020121232121 is a deficient number, since it is larger than the sum of its proper divisors (74302859589063).

211020121232121 is an equidigital number, since it uses as much as digits as its factorization.

211020121232121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990704794591.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 211020121232121 its reverse (121232121020112), we get a palindrome (332252242252233).

The spelling of 211020121232121 in words is "two hundred eleven trillion, twenty billion, one hundred twenty-one million, two hundred thirty-two thousand, one hundred twenty-one".