210221302031011 has 16 divisors (see below), whose sum is σ = 218652052792320. Its totient is φ = 201894821828640.

The previous prime is 210221302031003. The next prime is 210221302031033. The reversal of 210221302031011 is 110130203122012.

It is a cyclic number.

It is not a de Polignac number, because 210221302031011 - 2³ = 210221302031003 is a prime.

It is a super-2 number, since 2×210221302031011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210221302031011.

It is not an unprimeable number, because it can be changed into a prime (210221302031071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 825480 + ... + 20521306.

It is an arithmetic number, because the mean of its divisors is an integer number (13665753299520).

Almost surely, 2^{210221302031011} is an apocalyptic number.

210221302031011 is a deficient number, since it is larger than the sum of its proper divisors (8430750761309).

210221302031011 is a wasteful number, since it uses less digits than its factorization.

210221302031011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19698474.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 210221302031011 its reverse (110130203122012), we get a palindrome (320351505153023).

The spelling of 210221302031011 in words is "two hundred ten trillion, two hundred twenty-one billion, three hundred two million, thirty-one thousand, eleven".