1212110111203 has 8 divisors (see below), whose sum is σ = 1213434489888. Its totient is φ = 1210785920064.

The previous prime is 1212110111183. The next prime is 1212110111231. The reversal of 1212110111203 is 3021110112121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212110111203 - 2²⁵ = 1212076556771 is a prime.

It is a super-2 number, since 2×1212110111203² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212110111503) by changing a digit.

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, 15761401 + ... + 15838117.

It is an arithmetic number, because the mean of its divisors is an integer number (151679311236).

Almost surely, 2^{1212110111203} is an apocalyptic number.

1212110111203 is a deficient number, since it is larger than the sum of its proper divisors (1324378685).

1212110111203 is an equidigital number, since it uses as much as digits as its factorization.

1212110111203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93773.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1212110111203 its reverse (3021110112121), we get a palindrome (4233220223324).

The spelling of 1212110111203 in words is "one trillion, two hundred twelve billion, one hundred ten million, one hundred eleven thousand, two hundred three".