1212898560 has 288 divisors, whose sum is σ = 4181925888. Its totient is φ = 298721280.

The previous prime is 1212898559. The next prime is 1212898601. The reversal of 1212898560 is 658982121.

It is a happy number.

It is a super-2 number, since 2×1212898560² = 2942245833700147200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2737699 + ... + 2738141.

It is an arithmetic number, because the mean of its divisors is an integer number (14520576).

Almost surely, 2^1212898560 is an apocalyptic number.

1212898560 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 1212898560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2090962944).

1212898560 is an abundant number, since it is smaller than the sum of its proper divisors (2969027328).

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

1212898560 is a wasteful number, since it uses less digits than its factorization.

1212898560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521 (or 507 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 1212898560 is about 34826.6932108117. The cubic root of 1212898560 is about 1066.4524430905.

The spelling of 1212898560 in words is "one billion, two hundred twelve million, eight hundred ninety-eight thousand, five hundred sixty".