22013081 has 2 divisors, whose sum is σ = 22013082. Its totient is φ = 22013080.

The previous prime is 22013071. The next prime is 22013137. The reversal of 22013081 is 18031022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20620681 + 1392400 = 4541^2 + 1180^2 .

It is a cyclic number.

It is not a de Polignac number, because 22013081 - 2¹⁰ = 22012057 is a prime.

It is a super-2 number, since 2×22013081² = 969151470225122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22013021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11006540 + 11006541.

It is an arithmetic number, because the mean of its divisors is an integer number (11006541).

Almost surely, 2^22013081 is an apocalyptic number.

It is an amenable number.

22013081 is a deficient number, since it is larger than the sum of its proper divisors (1).

22013081 is an equidigital number, since it uses as much as digits as its factorization.

22013081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 22013081 is about 4691.8099918901. The cubic root of 22013081 is about 280.2594576326.

The spelling of 22013081 in words is "twenty-two million, thirteen thousand, eighty-one".