2272201381 has 4 divisors (see below), whose sum is σ = 2275639564. Its totient is φ = 2268763200.

The previous prime is 2272201367. The next prime is 2272201391. The reversal of 2272201381 is 1831022722.

2272201381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1831022722 = 2 ⋅915511361.

It can be written as a sum of positive squares in 2 ways, for example, as 1643897025 + 628304356 = 40545^2 + 25066^2 .

It is a cyclic number.

It is not a de Polignac number, because 2272201381 - 2²⁹ = 1735330469 is a prime.

It is a super-2 number, since 2×2272201381² = 10325798231636614322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2272201391) 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, 1718100 + ... + 1719421.

It is an arithmetic number, because the mean of its divisors is an integer number (568909891).

Almost surely, 2^2272201381 is an apocalyptic number.

It is an amenable number.

2272201381 is a deficient number, since it is larger than the sum of its proper divisors (3438183).

2272201381 is an equidigital number, since it uses as much as digits as its factorization.

2272201381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3438182.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 2272201381 is about 47667.6135442084. The cubic root of 2272201381 is about 1314.6665302558. Note that the first 3 decimals are identical.

The spelling of 2272201381 in words is "two billion, two hundred seventy-two million, two hundred one thousand, three hundred eighty-one".