211101120120221 has 8 divisors (see below), whose sum is σ = 211188040615200. Its totient is φ = 211014202604400.

The previous prime is 211101120120193. The next prime is 211101120120269. The reversal of 211101120120221 is 122021021101112.

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 211101120120221 - 2⁶ = 211101120120157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211101120120221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211101120170221) 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, 147027446 + ... + 148456296.

It is an arithmetic number, because the mean of its divisors is an integer number (26398505076900).

Almost surely, 2^{211101120120221} is an apocalyptic number.

It is an amenable number.

211101120120221 is a deficient number, since it is larger than the sum of its proper divisors (86920494979).

211101120120221 is a wasteful number, since it uses less digits than its factorization.

211101120120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489579.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 211101120120221 its reverse (122021021101112), we get a palindrome (333122141221333).

The spelling of 211101120120221 in words is "two hundred eleven trillion, one hundred one billion, one hundred twenty million, one hundred twenty thousand, two hundred twenty-one".