1212201110 has 16 divisors (see below), whose sum is σ = 2184181632. Its totient is φ = 484387200.

The previous prime is 1212201103. The next prime is 1212201113. The reversal of 1212201110 is 111022121.

It is a junction number, because it is equal to n+sod(n) for n = 1212201091 and 1212201100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212201113) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 51251 + ... + 71070.

It is an arithmetic number, because the mean of its divisors is an integer number (136511352).

Almost surely, 2^1212201110 is an apocalyptic number.

1212201110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212201110 is a deficient number, since it is larger than the sum of its proper divisors (971980522).

1212201110 is a wasteful number, since it uses less digits than its factorization.

1212201110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123319.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1212201110 is about 34816.6786181566. The cubic root of 1212201110 is about 1066.2479907440.

Adding to 1212201110 its reverse (111022121), we get a palindrome (1323223231).

The spelling of 1212201110 in words is "one billion, two hundred twelve million, two hundred one thousand, one hundred ten".