210233020101221 has 16 divisors (see below), whose sum is σ = 236626407855600. Its totient is φ = 185437837928448.

The previous prime is 210233020101217. The next prime is 210233020101263. The reversal of 210233020101221 is 122101020332012.

It can be written as a sum of positive squares in 8 ways, for example, as 1202465764900 + 209030554336321 = 1096570^2 + 14457889^2 .

It is a cyclic number.

It is not a de Polignac number, because 210233020101221 - 2² = 210233020101217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210233020101193 and 210233020101202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210233020101121) 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, 2874433886 + ... + 2874507023.

It is an arithmetic number, because the mean of its divisors is an integer number (14789150490975).

Almost surely, 2^{210233020101221} is an apocalyptic number.

It is an amenable number.

210233020101221 is a deficient number, since it is larger than the sum of its proper divisors (26393387754379).

210233020101221 is a wasteful number, since it uses less digits than its factorization.

210233020101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5748941048.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 210233020101221 its reverse (122101020332012), we get a palindrome (332334040433233).

The spelling of 210233020101221 in words is "two hundred ten trillion, two hundred thirty-three billion, twenty million, one hundred one thousand, two hundred twenty-one".