1212221001110 has 32 divisors (see below), whose sum is σ = 2493803814912. Its totient is φ = 415603288800.

The previous prime is 1212221001097. The next prime is 1212221001113. The reversal of 1212221001110 is 111001222121.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212221001113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1679159 + ... + 2289981.

It is an arithmetic number, because the mean of its divisors is an integer number (77931369216).

Almost surely, 2^{1212221001110} is an apocalyptic number.

1212221001110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212221001110 is an abundant number, since it is smaller than the sum of its proper divisors (1281582813802).

1212221001110 is a wasteful number, since it uses less digits than its factorization.

1212221001110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639188.

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

Adding to 1212221001110 its reverse (111001222121), we get a palindrome (1323222223231).

The spelling of 1212221001110 in words is "one trillion, two hundred twelve billion, two hundred twenty-one million, one thousand, one hundred ten".