1210130320221 has 12 divisors (see below), whose sum is σ = 1747975555872. Its totient is φ = 806749144776.

The previous prime is 1210130320169. The next prime is 1210130320271. The reversal of 1210130320221 is 1220230310121.

1210130320221 is a `hidden beast` number, since 1 + 210 + 130 + 320 + 2 + 2 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-1210130320221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210130320194 and 1210130320203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210130320271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3018270 + ... + 3395616.

It is an arithmetic number, because the mean of its divisors is an integer number (145664629656).

Almost surely, 2^{1210130320221} is an apocalyptic number.

It is an amenable number.

1210130320221 is a deficient number, since it is larger than the sum of its proper divisors (537845235651).

1210130320221 is a wasteful number, since it uses less digits than its factorization.

1210130320221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733680 (or 733677 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1210130320221 its reverse (1220230310121), we get a palindrome (2430360630342).

It can be divided in two parts, 1210130 and 320221, that added together give a palindrome (1530351).

The spelling of 1210130320221 in words is "one trillion, two hundred ten billion, one hundred thirty million, three hundred twenty thousand, two hundred twenty-one".