211021121213211 has 8 divisors (see below), whose sum is σ = 288965859679504. Its totient is φ = 136878565111200.

The previous prime is 211021121213183. The next prime is 211021121213219. The reversal of 211021121213211 is 112312121120112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211021121213211 - 2²³ = 211021112824603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211021121213219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 950545590940 + ... + 950545591161.

It is an arithmetic number, because the mean of its divisors is an integer number (36120732459938).

Almost surely, 2^{211021121213211} is an apocalyptic number.

211021121213211 is a deficient number, since it is larger than the sum of its proper divisors (77944738466293).

211021121213211 is a wasteful number, since it uses less digits than its factorization.

211021121213211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901091182141.

The product of its (nonzero) digits is 96, while the sum is 21.

Adding to 211021121213211 its reverse (112312121120112), we get a palindrome (323333242333323).

The spelling of 211021121213211 in words is "two hundred eleven trillion, twenty-one billion, one hundred twenty-one million, two hundred thirteen thousand, two hundred eleven".