2072220709441 has 3 divisors (see below), whose sum is σ = 2072222148963. Its totient is φ = 2072219269920.

The previous prime is 2072220709439. The next prime is 2072220709519. The reversal of 2072220709441 is 1449070222702.

The square root of 2072220709441 is 1439521.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 517710469441 + 1554510240000 = 719521^2 + 1246800^2 .

It is not a de Polignac number, because 2072220709441 - 2¹ = 2072220709439 is a prime.

It is a super-2 number, since 2×2072220709441² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2072220709394 and 2072220709403.

It is not an unprimeable number, because it can be changed into a prime (2072220709241) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 719761 + ... + 2159281.

It is an arithmetic number, because the mean of its divisors is an integer number (690740716321).

Almost surely, 2^{2072220709441} is an apocalyptic number.

2072220709441 is the 1439521-st square number.

2072220709441 is the 719761-st centered octagonal number.

It is an amenable number.

2072220709441 is a deficient number, since it is larger than the sum of its proper divisors (1439522).

2072220709441 is an frugal number, since it uses more digits than its factorization.

2072220709441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2879042 (or 1439521 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 2072220709441 in words is "two trillion, seventy-two billion, two hundred twenty million, seven hundred nine thousand, four hundred forty-one".