1201211111210 has 64 divisors (see below), whose sum is σ = 2498196639744. Its totient is φ = 410993587200.

The previous prime is 1201211111197. The next prime is 1201211111237. The reversal of 1201211111210 is 121111121021.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6667415 + ... + 6845205.

It is an arithmetic number, because the mean of its divisors is an integer number (39034322496).

Almost surely, 2^{1201211111210} is an apocalyptic number.

1201211111210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1201211111210 is an abundant number, since it is smaller than the sum of its proper divisors (1296985528534).

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

1201211111210 is a wasteful number, since it uses less digits than its factorization.

1201211111210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181439.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1201211111210 its reverse (121111121021), we get a palindrome (1322322232231).

The spelling of 1201211111210 in words is "one trillion, two hundred one billion, two hundred eleven million, one hundred eleven thousand, two hundred ten".