22140121 has 2 divisors, whose sum is σ = 22140122. Its totient is φ = 22140120.

The previous prime is 22140113. The next prime is 22140199. The reversal of 22140121 is 12104122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20602521 + 1537600 = 4539^2 + 1240^2 .

It is a cyclic number.

It is not a de Polignac number, because 22140121 - 2³ = 22140113 is a prime.

It is not a weakly prime, because it can be changed into another prime (22140221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11070060 + 11070061.

It is an arithmetic number, because the mean of its divisors is an integer number (11070061).

Almost surely, 2^22140121 is an apocalyptic number.

It is an amenable number.

22140121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22140121 is an equidigital number, since it uses as much as digits as its factorization.

22140121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 22140121 is about 4705.3290001869. The cubic root of 22140121 is about 280.7975602326.

Adding to 22140121 its reverse (12104122), we get a palindrome (34244243).

The spelling of 22140121 in words is "twenty-two million, one hundred forty thousand, one hundred twenty-one".