2130541302221 has 4 divisors (see below), whose sum is σ = 2130546106332. Its totient is φ = 2130536498112.

The previous prime is 2130541302217. The next prime is 2130541302301. The reversal of 2130541302221 is 1222031450312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2122645024900 + 7896277321 = 1456930^2 + 88861^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130541302221 - 2² = 2130541302217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130541308221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1660526 + ... + 2649231.

It is an arithmetic number, because the mean of its divisors is an integer number (532636526583).

Almost surely, 2^{2130541302221} is an apocalyptic number.

It is an amenable number.

2130541302221 is a deficient number, since it is larger than the sum of its proper divisors (4804111).

2130541302221 is an equidigital number, since it uses as much as digits as its factorization.

2130541302221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4804110.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 2130541302221 its reverse (1222031450312), we get a palindrome (3352572752533).

The spelling of 2130541302221 in words is "two trillion, one hundred thirty billion, five hundred forty-one million, three hundred two thousand, two hundred twenty-one".