1211201212010 has 16 divisors (see below), whose sum is σ = 2212701916896. Its totient is φ = 477249432528.

The previous prime is 1211201211977. The next prime is 1211201212063. The reversal of 1211201212010 is 102121021121.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 903880832 + ... + 903882171.

It is an arithmetic number, because the mean of its divisors is an integer number (138293869806).

Almost surely, 2^{1211201212010} is an apocalyptic number.

1211201212010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211201212010 is a deficient number, since it is larger than the sum of its proper divisors (1001500704886).

1211201212010 is a wasteful number, since it uses less digits than its factorization.

1211201212010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807763077.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1211201212010 its reverse (102121021121), we get a palindrome (1313322233131).

The spelling of 1211201212010 in words is "one trillion, two hundred eleven billion, two hundred one million, two hundred twelve thousand, ten".