222222201221131 has 2 divisors, whose sum is σ = 222222201221132. Its totient is φ = 222222201221130.

The previous prime is 222222201221101. The next prime is 222222201221159. The reversal of 222222201221131 is 131122102222222.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 222222201221131 - 2¹⁵ = 222222201188363 is a prime.

It is a super-2 number, since 2×222222201221131² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222222201221096 and 222222201221105.

It is not a weakly prime, because it can be changed into another prime (222222201221101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111111100610565 + 111111100610566.

It is an arithmetic number, because the mean of its divisors is an integer number (111111100610566).

Almost surely, 2^{222222201221131} is an apocalyptic number.

222222201221131 is a deficient number, since it is larger than the sum of its proper divisors (1).

222222201221131 is an equidigital number, since it uses as much as digits as its factorization.

222222201221131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 222222201221131 its reverse (131122102222222), we get a palindrome (353344303443353).

The spelling of 222222201221131 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, two hundred one million, two hundred twenty-one thousand, one hundred thirty-one".