1213101222103 has 4 divisors (see below), whose sum is σ = 1214976186000. Its totient is φ = 1211226258208.

The previous prime is 1213101222101. The next prime is 1213101222119. The reversal of 1213101222103 is 3012221013121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1213101222103 - 2¹ = 1213101222101 is a prime.

It is a super-2 number, since 2×1213101222103² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213101222101) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 937480978 + ... + 937482271.

It is an arithmetic number, because the mean of its divisors is an integer number (303744046500).

Almost surely, 2^{1213101222103} is an apocalyptic number.

1213101222103 is a deficient number, since it is larger than the sum of its proper divisors (1874963897).

1213101222103 is an equidigital number, since it uses as much as digits as its factorization.

1213101222103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874963896.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1213101222103 its reverse (3012221013121), we get a palindrome (4225322235224).

It can be divided in two parts, 1213101 and 222103, that added together give a square (1435204 = 1198²).

The spelling of 1213101222103 in words is "one trillion, two hundred thirteen billion, one hundred one million, two hundred twenty-two thousand, one hundred three".