1210320010221 has 16 divisors (see below), whose sum is σ = 1844533161984. Its totient is φ = 691522933104.

The previous prime is 1210320010219. The next prime is 1210320010279. The reversal of 1210320010221 is 1220100230121.

It is not a de Polignac number, because 1210320010221 - 2¹ = 1210320010219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1210320010221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210320010201) 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, 3519361 + ... + 3847926.

It is an arithmetic number, because the mean of its divisors is an integer number (115283322624).

Almost surely, 2^{1210320010221} is an apocalyptic number.

It is an amenable number.

1210320010221 is a deficient number, since it is larger than the sum of its proper divisors (634213151763).

1210320010221 is an equidigital number, since it uses as much as digits as its factorization.

1210320010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7375120.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1210320010221 its reverse (1220100230121), we get a palindrome (2430420240342).

The spelling of 1210320010221 in words is "one trillion, two hundred ten billion, three hundred twenty million, ten thousand, two hundred twenty-one".