2291722733081 has 16 divisors (see below), whose sum is σ = 2460078435024. Its totient is φ = 2127102050304.

The previous prime is 2291722733077. The next prime is 2291722733117. The reversal of 2291722733081 is 1803372271922.

It can be written as a sum of positive squares in 8 ways, for example, as 569549449225 + 1722173283856 = 754685^2 + 1312316^2 .

It is a cyclic number.

It is not a de Polignac number, because 2291722733081 - 2² = 2291722733077 is a prime.

It is a super-2 number, since 2×2291722733081² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2291722733071) 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, 10155185 + ... + 10378401.

It is an arithmetic number, because the mean of its divisors is an integer number (153754902189).

Almost surely, 2^{2291722733081} is an apocalyptic number.

It is an amenable number.

2291722733081 is a deficient number, since it is larger than the sum of its proper divisors (168355701943).

2291722733081 is a wasteful number, since it uses less digits than its factorization.

2291722733081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231580.

The product of its (nonzero) digits is 508032, while the sum is 47.

The spelling of 2291722733081 in words is "two trillion, two hundred ninety-one billion, seven hundred twenty-two million, seven hundred thirty-three thousand, eighty-one".