1212241220103 has 32 divisors (see below), whose sum is σ = 1714496331456. Its totient is φ = 760913906688.

The previous prime is 1212241220087. The next prime is 1212241220117. The reversal of 1212241220103 is 3010221422121.

It is a happy number.

It is not a de Polignac number, because 1212241220103 - 2⁴ = 1212241220087 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1212241220103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212241220303) 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 31 ways as a sum of consecutive naturals, for example, 981900 + ... + 1840817.

It is an arithmetic number, because the mean of its divisors is an integer number (53578010358).

Almost surely, 2^{1212241220103} is an apocalyptic number.

1212241220103 is a deficient number, since it is larger than the sum of its proper divisors (502255111353).

1212241220103 is a wasteful number, since it uses less digits than its factorization.

1212241220103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2822883.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1212241220103 its reverse (3010221422121), we get a palindrome (4222462642224).

The spelling of 1212241220103 in words is "one trillion, two hundred twelve billion, two hundred forty-one million, two hundred twenty thousand, one hundred three".