1210011200 has 168 divisors, whose sum is σ = 3197473920. Its totient is φ = 449280000.

The previous prime is 1210011199. The next prime is 1210011203. The reversal of 1210011200 is 21100121.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is not an unprimeable number, because it can be changed into a prime (1210011203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1610825 + ... + 1611575.

Almost surely, 2^1210011200 is an apocalyptic number.

1210011200 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 1210011200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1598736960).

1210011200 is an abundant number, since it is smaller than the sum of its proper divisors (1987462720).

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

1210011200 is a wasteful number, since it uses less digits than its factorization.

1210011200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845 (or 830 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1210011200 is about 34785.2152501605. The cubic root of 1210011200 is about 1065.6055245650.

Adding to 1210011200 its reverse (21100121), we get a palindrome (1231111321).

The spelling of 1210011200 in words is "one billion, two hundred ten million, eleven thousand, two hundred".