1321203103011 has 48 divisors (see below), whose sum is σ = 2088427760640. Its totient is φ = 798220805760.

The previous prime is 1321203102991. The next prime is 1321203103019. The reversal of 1321203103011 is 1103013021231.

1321203103011 is a `hidden beast` number, since 1 + 32 + 1 + 20 + 310 + 301 + 1 = 666.

It is not a de Polignac number, because 1321203103011 - 2²³ = 1321194714403 is a prime.

It is a super-2 number, since 2×1321203103011² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1321203103019) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41838150 + ... + 41869716.

It is an arithmetic number, because the mean of its divisors is an integer number (43508911680).

Almost surely, 2^{1321203103011} is an apocalyptic number.

1321203103011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1321203103011 is a deficient number, since it is larger than the sum of its proper divisors (767224657629).

1321203103011 is a wasteful number, since it uses less digits than its factorization.

1321203103011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32896 (or 32893 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1321203103011 its reverse (1103013021231), we get a palindrome (2424216124242).

The spelling of 1321203103011 in words is "one trillion, three hundred twenty-one billion, two hundred three million, one hundred three thousand, eleven".