2130221546 has 12 divisors (see below), whose sum is σ = 3220739298. Its totient is φ = 1056708072.

The previous prime is 2130221503. The next prime is 2130221551. The reversal of 2130221546 is 6451220312.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1384658521 + 745563025 = 37211^2 + 27305^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 761 + ... + 65276.

Almost surely, 2^2130221546 is an apocalyptic number.

2130221546 is a deficient number, since it is larger than the sum of its proper divisors (1090517752).

2130221546 is an equidigital number, since it uses as much as digits as its factorization.

2130221546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66293 (or 66166 counting only the distinct ones).

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

The square root of 2130221546 is about 46154.3231561248. The cubic root of 2130221546 is about 1286.6929587219.

Adding to 2130221546 its reverse (6451220312), we get a palindrome (8581441858).

The spelling of 2130221546 in words is "two billion, one hundred thirty million, two hundred twenty-one thousand, five hundred forty-six".