1222699673 has 4 divisors (see below), whose sum is σ = 1316753508. Its totient is φ = 1128645840.

The previous prime is 1222699661. The next prime is 1222699691. The reversal of 1222699673 is 3769962221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3769962221 = 463 ⋅8142467.

It can be written as a sum of positive squares in 2 ways, for example, as 788935744 + 433763929 = 28088^2 + 20827^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222699673 - 2¹⁰ = 1222698649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222699273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47026898 + ... + 47026923.

It is an arithmetic number, because the mean of its divisors is an integer number (329188377).

Almost surely, 2^1222699673 is an apocalyptic number.

1222699673 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1222699673 is a deficient number, since it is larger than the sum of its proper divisors (94053835).

1222699673 is an equidigital number, since it uses as much as digits as its factorization.

1222699673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94053834.

The product of its digits is 489888, while the sum is 47.

The square root of 1222699673 is about 34967.1227440863. The cubic root of 1222699673 is about 1069.3173136704.

The spelling of 1222699673 in words is "one billion, two hundred twenty-two million, six hundred ninety-nine thousand, six hundred seventy-three".