1212201210 has 32 divisors (see below), whose sum is σ = 3173764032. Its totient is φ = 293866880.

The previous prime is 1212201209. The next prime is 1212201217. The reversal of 1212201210 is 121022121.

It is not an unprimeable number, because it can be changed into a prime (1212201217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1836339 + ... + 1836998.

It is an arithmetic number, because the mean of its divisors is an integer number (99180126).

Almost surely, 2^1212201210 is an apocalyptic number.

1212201210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212201210 is an abundant number, since it is smaller than the sum of its proper divisors (1961562822).

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

1212201210 is a wasteful number, since it uses less digits than its factorization.

1212201210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3673358.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1212201210 is about 34816.6800542499. The cubic root of 1212201210 is about 1066.2480200639.

Adding to 1212201210 its reverse (121022121), we get a palindrome (1333223331).

Subtracting from 1212201210 its reverse (121022121), we obtain a square (1091179089 = 33033²).

The spelling of 1212201210 in words is "one billion, two hundred twelve million, two hundred one thousand, two hundred ten".