1123212021003 has 24 divisors (see below), whose sum is σ = 1693135821312. Its totient is φ = 716175594288.

The previous prime is 1123212020981. The next prime is 1123212021017. The reversal of 1123212021003 is 3001202123211.

1123212021003 is a `hidden beast` number, since 112 + 321 + 20 + 210 + 0 + 3 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-1123212021003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1123212021073) 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 23 ways as a sum of consecutive naturals, for example, 1714750 + ... + 2277452.

It is an arithmetic number, because the mean of its divisors is an integer number (70547325888).

Almost surely, 2^{1123212021003} is an apocalyptic number.

1123212021003 is a deficient number, since it is larger than the sum of its proper divisors (569923800309).

1123212021003 is a wasteful number, since it uses less digits than its factorization.

1123212021003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572375 (or 572372 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1123212021003 its reverse (3001202123211), we get a palindrome (4124414144214).

The spelling of 1123212021003 in words is "one trillion, one hundred twenty-three billion, two hundred twelve million, twenty-one thousand, three".