1140222121 has 2 divisors, whose sum is σ = 1140222122. Its totient is φ = 1140222120.

The previous prime is 1140222119. The next prime is 1140222133. The reversal of 1140222121 is 1212220411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 672105625 + 468116496 = 25925^2 + 21636^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140222121 - 2¹ = 1140222119 is a prime.

Together with 1140222119, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1140222095 and 1140222104.

It is not a weakly prime, because it can be changed into another prime (1140252121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570111060 + 570111061.

It is an arithmetic number, because the mean of its divisors is an integer number (570111061).

Almost surely, 2^1140222121 is an apocalyptic number.

It is an amenable number.

1140222121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140222121 is an equidigital number, since it uses as much as digits as its factorization.

1140222121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1140222121 is about 33767.1752001852. The cubic root of 1140222121 is about 1044.7117695957.

Adding to 1140222121 its reverse (1212220411), we get a palindrome (2352442532).

The spelling of 1140222121 in words is "one billion, one hundred forty million, two hundred twenty-two thousand, one hundred twenty-one".