2022082721 has 8 divisors (see below), whose sum is σ = 2046863784. Its totient is φ = 1997395200.

The previous prime is 2022082691. The next prime is 2022082723. The reversal of 2022082721 is 1272802202.

It can be written as a sum of positive squares in 4 ways, for example, as 956974225 + 1065108496 = 30935^2 + 32636^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2022082721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2022082723) 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, 20615 + ... + 66851.

It is an arithmetic number, because the mean of its divisors is an integer number (255857973).

Almost surely, 2^2022082721 is an apocalyptic number.

It is an amenable number.

2022082721 is a deficient number, since it is larger than the sum of its proper divisors (24781063).

2022082721 is a wasteful number, since it uses less digits than its factorization.

2022082721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46771.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 2022082721 is about 44967.5741062379. The cubic root of 2022082721 is about 1264.5411680957.

Adding to 2022082721 its reverse (1272802202), we get a palindrome (3294884923).

The spelling of 2022082721 in words is "two billion, twenty-two million, eighty-two thousand, seven hundred twenty-one".