1223271700 has 36 divisors (see below), whose sum is σ = 3033715552. Its totient is φ = 419407200.

The previous prime is 1223271671. The next prime is 1223271713. The reversal of 1223271700 is 71723221.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 873066 + ... + 874465.

Almost surely, 2^1223271700 is an apocalyptic number.

1223271700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223271700 is an abundant number, since it is smaller than the sum of its proper divisors (1810443852).

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

1223271700 is a wasteful number, since it uses less digits than its factorization.

1223271700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747552 (or 1747545 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 1223271700 is about 34975.3012853356. The cubic root of 1223271700 is about 1069.4840439052.

Adding to 1223271700 its reverse (71723221), we get a palindrome (1294994921).

The spelling of 1223271700 in words is "one billion, two hundred twenty-three million, two hundred seventy-one thousand, seven hundred".