1011100321203 has 32 divisors (see below), whose sum is σ = 1576363161600. Its totient is φ = 564498270336.

The previous prime is 1011100321157. The next prime is 1011100321241. The reversal of 1011100321203 is 3021230011101.

It is a happy number.

It is not a de Polignac number, because 1011100321203 - 2²² = 1011096126899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1011100321003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1634508 + ... + 2166521.

It is an arithmetic number, because the mean of its divisors is an integer number (49261348800).

Almost surely, 2^{1011100321203} is an apocalyptic number.

1011100321203 is a deficient number, since it is larger than the sum of its proper divisors (565262840397).

1011100321203 is a wasteful number, since it uses less digits than its factorization.

1011100321203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3801331.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1011100321203 its reverse (3021230011101), we get a palindrome (4032330332304).

The spelling of 1011100321203 in words is "one trillion, eleven billion, one hundred million, three hundred twenty-one thousand, two hundred three".