210011020221 has 16 divisors (see below), whose sum is σ = 282228085440. Its totient is φ = 138903672960.

The previous prime is 210011020207. The next prime is 210011020253. The reversal of 210011020221 is 122020110012.

It is not a de Polignac number, because 210011020221 - 2⁵ = 210011020189 is a prime.

It is a super-2 number, since 2×210011020221² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210011020197 and 210011020206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210011020201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99150 + ... + 655631.

It is an arithmetic number, because the mean of its divisors is an integer number (17639255340).

Almost surely, 2^210011020221 is an apocalyptic number.

It is an amenable number.

210011020221 is a deficient number, since it is larger than the sum of its proper divisors (72217065219).

210011020221 is a wasteful number, since it uses less digits than its factorization.

210011020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755516.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 210011020221 its reverse (122020110012), we get a palindrome (332031130233).

The spelling of 210011020221 in words is "two hundred ten billion, eleven million, twenty thousand, two hundred twenty-one".