210020122221011 has 4 divisors (see below), whose sum is σ = 210053464047000. Its totient is φ = 209986780395024.

The previous prime is 210020122220869. The next prime is 210020122221017. The reversal of 210020122221011 is 110122221020012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 210020122221011 - 2³⁰ = 210019048479187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210020122221017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16670903546 + ... + 16670916143.

It is an arithmetic number, because the mean of its divisors is an integer number (52513366011750).

Almost surely, 2^{210020122221011} is an apocalyptic number.

210020122221011 is a deficient number, since it is larger than the sum of its proper divisors (33341825989).

210020122221011 is an equidigital number, since it uses as much as digits as its factorization.

210020122221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33341825988.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210020122221011 its reverse (110122221020012), we get a palindrome (320142343241023).

The spelling of 210020122221011 in words is "two hundred ten trillion, twenty billion, one hundred twenty-two million, two hundred twenty-one thousand, eleven".