211101311312221 has 8 divisors (see below), whose sum is σ = 230293149113664. Its totient is φ = 191909608427520.

The previous prime is 211101311312183. The next prime is 211101311312303. The reversal of 211101311312221 is 122213113101112.

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 211101311312221 - 2²⁹ = 211100774441309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211101311312192 and 211101311312201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211101311312321) 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, 30443665 + ... + 36728998.

It is an arithmetic number, because the mean of its divisors is an integer number (28786643639208).

Almost surely, 2^{211101311312221} is an apocalyptic number.

It is an amenable number.

211101311312221 is a deficient number, since it is larger than the sum of its proper divisors (19191837801443).

211101311312221 is a wasteful number, since it uses less digits than its factorization.

211101311312221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67458371.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 211101311312221 its reverse (122213113101112), we get a palindrome (333314424413333).

The spelling of 211101311312221 in words is "two hundred eleven trillion, one hundred one billion, three hundred eleven million, three hundred twelve thousand, two hundred twenty-one".