2226406981 has 2 divisors, whose sum is σ = 2226406982. Its totient is φ = 2226406980.

The previous prime is 2226406961. The next prime is 2226406997. The reversal of 2226406981 is 1896046222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1716776356 + 509630625 = 41434^2 + 22575^2 .

It is a cyclic number.

It is not a de Polignac number, because 2226406981 - 2¹⁹ = 2225882693 is a prime.

It is a super-2 number, since 2×2226406981² = 9913776090091068722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2226406951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1113203490 + 1113203491.

It is an arithmetic number, because the mean of its divisors is an integer number (1113203491).

Almost surely, 2^2226406981 is an apocalyptic number.

It is an amenable number.

2226406981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2226406981 is an equidigital number, since it uses as much as digits as its factorization.

2226406981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 2226406981 is about 47184.8172720845. The cubic root of 2226406981 is about 1305.7745055784.

The spelling of 2226406981 in words is "two billion, two hundred twenty-six million, four hundred six thousand, nine hundred eighty-one".