1220534200 has 48 divisors (see below), whose sum is σ = 2873700000. Its totient is φ = 482027520.

The previous prime is 1220534167. The next prime is 1220534251. The reversal of 1220534200 is 24350221.

It is a super-3 number, since 3×1220534200³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22825 + ... + 54424.

It is an arithmetic number, because the mean of its divisors is an integer number (59868750).

Almost surely, 2^1220534200 is an apocalyptic number.

1220534200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220534200 is an abundant number, since it is smaller than the sum of its proper divisors (1653165800).

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

1220534200 is a wasteful number, since it uses less digits than its factorization.

1220534200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77344 (or 77335 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 1220534200 is about 34936.1446069826. The cubic root of 1220534200 is about 1068.6856660202.

Adding to 1220534200 its reverse (24350221), we get a palindrome (1244884421).

It can be divided in two parts, 122053 and 4200, that added together give a triangular number (126253 = T₅₀₂).

The spelling of 1220534200 in words is "one billion, two hundred twenty million, five hundred thirty-four thousand, two hundred".