1223653122 has 32 divisors (see below), whose sum is σ = 2792726400. Its totient is φ = 396859824.

The previous prime is 1223653117. The next prime is 1223653127. The reversal of 1223653122 is 2213563221.

It is a happy number.

1223653122 is a `hidden beast` number, since 1 + 2 + 2 + 3 + 653 + 1 + 2 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (1223653117) and next prime (1223653127).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1223653127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304222 + ... + 308217.

It is an arithmetic number, because the mean of its divisors is an integer number (87272700).

Almost surely, 2^1223653122 is an apocalyptic number.

1223653122 is an abundant number, since it is smaller than the sum of its proper divisors (1569073278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223653122 is a wasteful number, since it uses less digits than its factorization.

1223653122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612487 (or 612481 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 1223653122 is about 34980.7535939408. The cubic root of 1223653122 is about 1069.5951891105.

The spelling of 1223653122 in words is "one billion, two hundred twenty-three million, six hundred fifty-three thousand, one hundred twenty-two".