1203101121011 has 4 divisors (see below), whose sum is σ = 1241910834624. Its totient is φ = 1164291407400.

The previous prime is 1203101120909. The next prime is 1203101121041. The reversal of 1203101121011 is 1101211013021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1203101121011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1203101121041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19404856760 + ... + 19404856821.

It is an arithmetic number, because the mean of its divisors is an integer number (310477708656).

Almost surely, 2^{1203101121011} is an apocalyptic number.

1203101121011 is a deficient number, since it is larger than the sum of its proper divisors (38809713613).

1203101121011 is an equidigital number, since it uses as much as digits as its factorization.

1203101121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38809713612.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 1203101121011 its reverse (1101211013021), we get a palindrome (2304312134032).

The spelling of 1203101121011 in words is "one trillion, two hundred three billion, one hundred one million, one hundred twenty-one thousand, eleven".