22220743121 has 2 divisors, whose sum is σ = 22220743122. Its totient is φ = 22220743120.

The previous prime is 22220743073. The next prime is 22220743133. The reversal of 22220743121 is 12134702222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17171219521 + 5049523600 = 131039^2 + 71060^2 .

It is a cyclic number.

It is not a de Polignac number, because 22220743121 - 2¹⁰ = 22220742097 is a prime.

It is a super-2 number, since 2×22220743121² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22220743021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110371560 + 11110371561.

It is an arithmetic number, because the mean of its divisors is an integer number (11110371561).

Almost surely, 2^22220743121 is an apocalyptic number.

It is an amenable number.

22220743121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22220743121 is an equidigital number, since it uses as much as digits as its factorization.

22220743121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 26.

The spelling of 22220743121 in words is "twenty-two billion, two hundred twenty million, seven hundred forty-three thousand, one hundred twenty-one".