211002101220121 has 4 divisors (see below), whose sum is σ = 211120442276992. Its totient is φ = 210883760163252.

The previous prime is 211002101220091. The next prime is 211002101220149. The reversal of 211002101220121 is 121022101200112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211002101220121 - 2²⁹ = 211001564349209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211002101220095 and 211002101220104.

It is not an unprimeable number, because it can be changed into a prime (211002101220191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59170525761 + ... + 59170529326.

It is an arithmetic number, because the mean of its divisors is an integer number (52780110569248).

Almost surely, 2^{211002101220121} is an apocalyptic number.

It is an amenable number.

211002101220121 is a deficient number, since it is larger than the sum of its proper divisors (118341056871).

211002101220121 is a wasteful number, since it uses less digits than its factorization.

211002101220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118341056870.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211002101220121 its reverse (121022101200112), we get a palindrome (332024202420233).

The spelling of 211002101220121 in words is "two hundred eleven trillion, two billion, one hundred one million, two hundred twenty thousand, one hundred twenty-one".