1210101200 has 240 divisors, whose sum is σ = 3669943680. Its totient is φ = 372480000.

The previous prime is 1210101163. The next prime is 1210101229. The reversal of 1210101200 is 21010121.

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

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 47 ways as a sum of consecutive naturals, for example, 3110606 + ... + 3110994.

It is an arithmetic number, because the mean of its divisors is an integer number (15291432).

Almost surely, 2^1210101200 is an apocalyptic number.

1210101200 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 1210101200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1834971840).

1210101200 is an abundant number, since it is smaller than the sum of its proper divisors (2459842480).

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

1210101200 is a wasteful number, since it uses less digits than its factorization.

1210101200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526 (or 515 counting only the distinct ones).

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

The square root of 1210101200 is about 34786.5088791618. The cubic root of 1210101200 is about 1065.6319436372.

Adding to 1210101200 its reverse (21010121), we get a palindrome (1231111321).

The spelling of 1210101200 in words is "one billion, two hundred ten million, one hundred one thousand, two hundred".