1212203160 has 192 divisors, whose sum is σ = 4594824000. Its totient is φ = 277046784.

The previous prime is 1212203159. The next prime is 1212203191. The reversal of 1212203160 is 613022121.

It is a super-2 number, since 2×1212203160² = 2938873002227971200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 118572 + ... + 128388.

It is an arithmetic number, because the mean of its divisors is an integer number (23931375).

Almost surely, 2^1212203160 is an apocalyptic number.

1212203160 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 1212203160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2297412000).

1212203160 is an abundant number, since it is smaller than the sum of its proper divisors (3382620840).

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

1212203160 is a wasteful number, since it uses less digits than its factorization.

1212203160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9855 (or 9834 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1212203160 is about 34816.7080580574. The cubic root of 1212203160 is about 1066.2485918013.

Adding to 1212203160 its reverse (613022121), we get a palindrome (1825225281).

The spelling of 1212203160 in words is "one billion, two hundred twelve million, two hundred three thousand, one hundred sixty".