211022210021 has 8 divisors (see below), whose sum is σ = 241172615424. Its totient is φ = 180872898480.

The previous prime is 211022209991. The next prime is 211022210081. The reversal of 211022210021 is 120012220112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211022210021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211022209978 and 211022210005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211022210081) 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, 192971 + ... + 677703.

It is an arithmetic number, because the mean of its divisors is an integer number (30146576928).

Almost surely, 2^211022210021 is an apocalyptic number.

It is an amenable number.

211022210021 is a deficient number, since it is larger than the sum of its proper divisors (30150405403).

211022210021 is an equidigital number, since it uses as much as digits as its factorization.

211022210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546931.

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

Adding to 211022210021 its reverse (120012220112), we get a palindrome (331034430133).

The spelling of 211022210021 in words is "two hundred eleven billion, twenty-two million, two hundred ten thousand, twenty-one".