210221122011 has 8 divisors (see below), whose sum is σ = 282151087104. Its totient is φ = 139219285800.

The previous prime is 210221121997. The next prime is 210221122087. The reversal of 210221122011 is 110221122012.

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

It is not a de Polignac number, because 210221122011 - 2¹⁰ = 210221120987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210221322011) 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, 232031691 + ... + 232032596.

It is an arithmetic number, because the mean of its divisors is an integer number (35268885888).

Almost surely, 2^210221122011 is an apocalyptic number.

210221122011 is a deficient number, since it is larger than the sum of its proper divisors (71929965093).

210221122011 is a wasteful number, since it uses less digits than its factorization.

210221122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464064441.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 210221122011 its reverse (110221122012), we get a palindrome (320442244023).

Subtracting from 210221122011 its reverse (110221122012), we obtain a palindrome (99999999999).

The spelling of 210221122011 in words is "two hundred ten billion, two hundred twenty-one million, one hundred twenty-two thousand, eleven".