1212088320 has 272 divisors, whose sum is σ = 4341071520. Its totient is φ = 320864256.

The previous prime is 1212088309. The next prime is 1212088327. The reversal of 1212088320 is 238802121.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212088327) 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, 8847292 + ... + 8847428.

Almost surely, 2^1212088320 is an apocalyptic number.

1212088320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212088320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2170535760).

1212088320 is an abundant number, since it is smaller than the sum of its proper divisors (3128983200).

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

1212088320 is an frugal number, since it uses more digits than its factorization.

1212088320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 1212088320 is about 34815.0588108077. The cubic root of 1212088320 is about 1066.2149198176.

The spelling of 1212088320 in words is "one billion, two hundred twelve million, eighty-eight thousand, three hundred twenty".