1121221223103 has 16 divisors (see below), whose sum is σ = 1506332044800. Its totient is φ = 741798929856.

The previous prime is 1121221223093. The next prime is 1121221223153. The reversal of 1121221223103 is 3013221221211.

It is not a de Polignac number, because 1121221223103 - 2⁵ = 1121221223071 is a prime.

It is a super-2 number, since 2×1121221223103² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1121221223103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121221223153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 942426 + ... + 1769352.

It is an arithmetic number, because the mean of its divisors is an integer number (94145752800).

Almost surely, 2^{1121221223103} is an apocalyptic number.

1121221223103 is a deficient number, since it is larger than the sum of its proper divisors (385110821697).

1121221223103 is a wasteful number, since it uses less digits than its factorization.

1121221223103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830366.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1121221223103 its reverse (3013221221211), we get a palindrome (4134442444314).

The spelling of 1121221223103 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-one million, two hundred twenty-three thousand, one hundred three".