2722521081 has 16 divisors (see below), whose sum is σ = 4210525184. Its totient is φ = 1532505744.

The previous prime is 2722521059. The next prime is 2722521103. The reversal of 2722521081 is 1801252272.

It is an interprime number because it is at equal distance from previous prime (2722521059) and next prime (2722521103).

It is not a de Polignac number, because 2722521081 - 2²² = 2718326777 is a prime.

It is a super-2 number, since 2×2722521081² = 14824242072978817122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2722521031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 966085 + ... + 968898.

It is an arithmetic number, because the mean of its divisors is an integer number (263157824).

Almost surely, 2^2722521081 is an apocalyptic number.

2722521081 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2722521081 is a deficient number, since it is larger than the sum of its proper divisors (1488004103).

2722521081 is a wasteful number, since it uses less digits than its factorization.

2722521081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935060.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 2722521081 is about 52177.7834044337. The cubic root of 2722521081 is about 1396.3375498732.

The spelling of 2722521081 in words is "two billion, seven hundred twenty-two million, five hundred twenty-one thousand, eighty-one".