1212226073 has 2 divisors, whose sum is σ = 1212226074. Its totient is φ = 1212226072.

The previous prime is 1212226009. The next prime is 1212226133. The reversal of 1212226073 is 3706222121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1197990544 + 14235529 = 34612^2 + 3773^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212226073 - 2⁶ = 1212226009 is a prime.

It is a super-2 number, since 2×1212226073² = 2938984104122002658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1212220073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606113036 + 606113037.

It is an arithmetic number, because the mean of its divisors is an integer number (606113037).

Almost surely, 2^1212226073 is an apocalyptic number.

It is an amenable number.

1212226073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212226073 is an equidigital number, since it uses as much as digits as its factorization.

1212226073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 1212226073 is about 34817.0371082894. The cubic root of 1212226073 is about 1066.2553098172.

Adding to 1212226073 its reverse (3706222121), we get a palindrome (4918448194).

The spelling of 1212226073 in words is "one billion, two hundred twelve million, two hundred twenty-six thousand, seventy-three".