1972222229 has 2 divisors, whose sum is σ = 1972222230. Its totient is φ = 1972222228.

The previous prime is 1972222177. The next prime is 1972222237. The reversal of 1972222229 is 9222222791.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1929581329 + 42640900 = 43927^2 + 6530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1972222229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1972222192 and 1972222201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1972222429) 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, 986111114 + 986111115.

It is an arithmetic number, because the mean of its divisors is an integer number (986111115).

Almost surely, 2^1972222229 is an apocalyptic number.

It is an amenable number.

1972222229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1972222229 is an equidigital number, since it uses as much as digits as its factorization.

1972222229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 38.

The square root of 1972222229 is about 44409.7087245571. The cubic root of 1972222229 is about 1254.0608687101.

The spelling of 1972222229 in words is "one billion, nine hundred seventy-two million, two hundred twenty-two thousand, two hundred twenty-nine".