1011203321123 has 8 divisors (see below), whose sum is σ = 1015487110176. Its totient is φ = 1006920259200.

The previous prime is 1011203321111. The next prime is 1011203321129. The reversal of 1011203321123 is 3211233021101.

It is a happy number.

1011203321123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1011203321123 - 2⁶ = 1011203321059 is a prime.

It is a super-2 number, since 2×1011203321123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011203321095 and 1011203321104.

It is not an unprimeable number, because it can be changed into a prime (1011203321129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2702090 + ... + 3053472.

It is an arithmetic number, because the mean of its divisors is an integer number (126935888772).

Almost surely, 2^{1011203321123} is an apocalyptic number.

1011203321123 is a deficient number, since it is larger than the sum of its proper divisors (4283789053).

1011203321123 is a wasteful number, since it uses less digits than its factorization.

1011203321123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363565.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1011203321123 its reverse (3211233021101), we get a palindrome (4222436342224).

It can be divided in two parts, 101120 and 3321123, that added together give a palindrome (3422243).

The spelling of 1011203321123 in words is "one trillion, eleven billion, two hundred three million, three hundred twenty-one thousand, one hundred twenty-three".