211001101210121 has 16 divisors (see below), whose sum is σ = 214775338276800. Its totient is φ = 207233514470400.

The previous prime is 211001101210103. The next prime is 211001101210129. The reversal of 211001101210121 is 121012101100112.

It is a cyclic number.

It is not a de Polignac number, because 211001101210121 - 2¹⁸ = 211001100947977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211001101210096 and 211001101210105.

It is not an unprimeable number, because it can be changed into a prime (211001101210129) 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, 477623225 + ... + 478064793.

It is an arithmetic number, because the mean of its divisors is an integer number (13423458642300).

Almost surely, 2^{211001101210121} is an apocalyptic number.

It is an amenable number.

211001101210121 is a deficient number, since it is larger than the sum of its proper divisors (3774237066679).

211001101210121 is a wasteful number, since it uses less digits than its factorization.

211001101210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449080.

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

Adding to 211001101210121 its reverse (121012101100112), we get a palindrome (332013202310233).

The spelling of 211001101210121 in words is "two hundred eleven trillion, one billion, one hundred one million, two hundred ten thousand, one hundred twenty-one".