1223123122 has 16 divisors (see below), whose sum is σ = 1990242072. Its totient is φ = 560396160.

The previous prime is 1223123107. The next prime is 1223123137. The reversal of 1223123122 is 2213213221.

It is an interprime number because it is at equal distance from previous prime (1223123107) and next prime (1223123137).

It can be written as a sum of positive squares in 4 ways, for example, as 1170255681 + 52867441 = 34209^2 + 7271^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1223123122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168129 + ... + 175252.

Almost surely, 2^1223123122 is an apocalyptic number.

1223123122 is a deficient number, since it is larger than the sum of its proper divisors (767118950).

1223123122 is a wasteful number, since it uses less digits than its factorization.

1223123122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343533.

The product of its digits is 288, while the sum is 19.

The square root of 1223123122 is about 34973.1771790897. The cubic root of 1223123122 is about 1069.4407424772.

Adding to 1223123122 its reverse (2213213221), we get a palindrome (3436336343).

Subtracting 1223123122 from its reverse (2213213221), we obtain a palindrome (990090099).

It can be divided in two parts, 12231 and 23122, that added together give a palindrome (35353).

The spelling of 1223123122 in words is "one billion, two hundred twenty-three million, one hundred twenty-three thousand, one hundred twenty-two".