211022122121021 has 8 divisors (see below), whose sum is σ = 220198027452480. Its totient is φ = 201846302660992.

The previous prime is 211022122121017. The next prime is 211022122121029. The reversal of 211022122121021 is 120121221220112.

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 211022122121021 - 2² = 211022122121017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 211022122120984 and 211022122121002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211022122121029) 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, 16420916 + ... + 26300013.

It is an arithmetic number, because the mean of its divisors is an integer number (27524753431560).

Almost surely, 2^{211022122121021} is an apocalyptic number.

It is an amenable number.

211022122121021 is a deficient number, since it is larger than the sum of its proper divisors (9175905331459).

211022122121021 is a wasteful number, since it uses less digits than its factorization.

211022122121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42935715.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 211022122121021 its reverse (120121221220112), we get a palindrome (331143343341133).

Subtracting from 211022122121021 its reverse (120121221220112), we obtain a palindrome (90900900900909).

The spelling of 211022122121021 in words is "two hundred eleven trillion, twenty-two billion, one hundred twenty-two million, one hundred twenty-one thousand, twenty-one".