211022021021 has 8 divisors (see below), whose sum is σ = 253861078080. Its totient is φ = 171356227488.

The previous prime is 211022020997. The next prime is 211022021069. The reversal of 211022021021 is 120120220112.

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 211022021021 - 2¹⁴ = 211022004637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211022020987 and 211022021005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211022021521) 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, 793315736 + ... + 793316001.

It is an arithmetic number, because the mean of its divisors is an integer number (31732634760).

Almost surely, 2^211022021021 is an apocalyptic number.

It is an amenable number.

211022021021 is a deficient number, since it is larger than the sum of its proper divisors (42839057059).

211022021021 is a wasteful number, since it uses less digits than its factorization.

211022021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586631763.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 211022021021 its reverse (120120220112), we get a palindrome (331142241133).

The spelling of 211022021021 in words is "two hundred eleven billion, twenty-two million, twenty-one thousand, twenty-one".