211122101111021 has 8 divisors (see below), whose sum is σ = 222233999506080. Its totient is φ = 200010223602288.

The previous prime is 211122101110981. The next prime is 211122101111041. The reversal of 211122101111021 is 120111101221112.

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 211122101111021 - 2⁶ = 211122101110957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211122101111041) 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, 18226730 + ... + 27467396.

It is an arithmetic number, because the mean of its divisors is an integer number (27779249938260).

Almost surely, 2^{211122101111021} is an apocalyptic number.

It is an amenable number.

211122101111021 is a deficient number, since it is larger than the sum of its proper divisors (11111898395059).

211122101111021 is a wasteful number, since it uses less digits than its factorization.

211122101111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10443163.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 211122101111021 its reverse (120111101221112), we get a palindrome (331233202332133).

The spelling of 211122101111021 in words is "two hundred eleven trillion, one hundred twenty-two billion, one hundred one million, one hundred eleven thousand, twenty-one".