146222861 has 2 divisors, whose sum is σ = 146222862. Its totient is φ = 146222860.

The previous prime is 146222821. The next prime is 146222863. The reversal of 146222861 is 168222641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73444900 + 72777961 = 8570^2 + 8531^2 .

It is a cyclic number.

It is not a de Polignac number, because 146222861 - 2¹⁰ = 146221837 is a prime.

It is a super-2 number, since 2×146222861² = 42762250158050642, which contains 22 as substring.

Together with 146222863, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146222863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73111430 + 73111431.

It is an arithmetic number, because the mean of its divisors is an integer number (73111431).

Almost surely, 2^146222861 is an apocalyptic number.

It is an amenable number.

146222861 is a deficient number, since it is larger than the sum of its proper divisors (1).

146222861 is an equidigital number, since it uses as much as digits as its factorization.

146222861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 32.

The square root of 146222861 is about 12092.2645108350. The cubic root of 146222861 is about 526.8315301760.

The spelling of 146222861 in words is "one hundred forty-six million, two hundred twenty-two thousand, eight hundred sixty-one".