210011212101121 has 16 divisors (see below), whose sum is σ = 212330813011200. Its totient is φ = 207697067379648.

The previous prime is 210011212101107. The next prime is 210011212101137. The reversal of 210011212101121 is 121101212110012.

It is a cyclic number.

It is not a de Polignac number, because 210011212101121 - 2³³ = 210002622166529 is a prime.

It is a super-3 number, since 3×210011212101121³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210011212101095 and 210011212101104.

It is not an unprimeable number, because it can be changed into a prime (210011212101221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 751863675 + ... + 752142943.

It is an arithmetic number, because the mean of its divisors is an integer number (13270675813200).

Almost surely, 2^{210011212101121} is an apocalyptic number.

It is an amenable number.

210011212101121 is a deficient number, since it is larger than the sum of its proper divisors (2319600910079).

210011212101121 is a wasteful number, since it uses less digits than its factorization.

210011212101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289008.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 210011212101121 its reverse (121101212110012), we get a palindrome (331112424211133).

The spelling of 210011212101121 in words is "two hundred ten trillion, eleven billion, two hundred twelve million, one hundred one thousand, one hundred twenty-one".