Search a number
22022131 is a prime number
BaseRepresentation
bin101010000000…
…0011111110011
31112102211200111
41110000133303
521114202011
62104002151
7355120315
oct124003763
945384614
1022022131
111148160a
127460357
134740961
142cd37b5
151e00121
hex15007f3

22022131 has 2 divisors, whose sum is σ = 22022132. Its totient is φ = 22022130.

The previous prime is 22022113. The next prime is 22022153. The reversal of 22022131 is 13122022.

Together with previous prime (22022113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-22022131 is a prime.

It is a super-2 number, since 2×220221312 = 969948507562322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22022101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11011065 + 11011066.

It is an arithmetic number, because the mean of its divisors is an integer number (11011066).

Almost surely, 222022131 is an apocalyptic number.

22022131 is a deficient number, since it is larger than the sum of its proper divisors (1).

22022131 is an equidigital number, since it uses as much as digits as its factorization.

22022131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 22022131 is about 4692.7743393434. The cubic root of 22022131 is about 280.2978590509.

Adding to 22022131 its reverse (13122022), we get a palindrome (35144153).

It can be divided in two parts, 22022 and 131, that multiplied together give a palindrome (2884882).

The spelling of 22022131 in words is "twenty-two million, twenty-two thousand, one hundred thirty-one".