2101021220324 has 24 divisors (see below), whose sum is σ = 3959664880248. Its totient is φ = 969690355200.

The previous prime is 2101021220323. The next prime is 2101021220339. The reversal of 2101021220324 is 4230221201012.

It can be written as a sum of positive squares in 4 ways, for example, as 2955879424 + 2098065340900 = 54368^2 + 1448470^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2101021220296 and 2101021220305.

It is not an unprimeable number, because it can be changed into a prime (2101021220321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5274974 + ... + 5659274.

It is an arithmetic number, because the mean of its divisors is an integer number (164986036677).

Almost surely, 2^{2101021220324} is an apocalyptic number.

It is an amenable number.

2101021220324 is a deficient number, since it is larger than the sum of its proper divisors (1858643659924).

2101021220324 is a wasteful number, since it uses less digits than its factorization.

2101021220324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489455 (or 489453 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 2101021220324 its reverse (4230221201012), we get a palindrome (6331242421336).

The spelling of 2101021220324 in words is "two trillion, one hundred one billion, twenty-one million, two hundred twenty thousand, three hundred twenty-four".