10203320123111 has 16 divisors (see below), whose sum is σ = 10506771563904. Its totient is φ = 9903790950144.

The previous prime is 10203320123071. The next prime is 10203320123119. The reversal of 10203320123111 is 11132102330201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 10203320123111 - 2²⁶ = 10203253014247 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 (10203320123119) 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, 1137701 + ... + 4658433.

It is an arithmetic number, because the mean of its divisors is an integer number (656673222744).

Almost surely, 2^{10203320123111} is an apocalyptic number.

10203320123111 is a deficient number, since it is larger than the sum of its proper divisors (303451440793).

10203320123111 is a wasteful number, since it uses less digits than its factorization.

10203320123111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3521290.

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

Adding to 10203320123111 its reverse (11132102330201), we get a palindrome (21335422453312).

The spelling of 10203320123111 in words is "ten trillion, two hundred three billion, three hundred twenty million, one hundred twenty-three thousand, one hundred eleven".