1101203231213 has 4 divisors (see below), whose sum is σ = 1101230689728. Its totient is φ = 1101175772700.

The previous prime is 1101203231173. The next prime is 1101203231231. The reversal of 1101203231213 is 3121323021011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1101203231213 - 2¹⁴ = 1101203214829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101203231413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13669013 + ... + 13749338.

It is an arithmetic number, because the mean of its divisors is an integer number (275307672432).

Almost surely, 2^{1101203231213} is an apocalyptic number.

It is an amenable number.

1101203231213 is a deficient number, since it is larger than the sum of its proper divisors (27458515).

1101203231213 is an equidigital number, since it uses as much as digits as its factorization.

1101203231213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27458514.

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

Adding to 1101203231213 its reverse (3121323021011), we get a palindrome (4222526252224).

The spelling of 1101203231213 in words is "one trillion, one hundred one billion, two hundred three million, two hundred thirty-one thousand, two hundred thirteen".