1320121332111 has 64 divisors (see below), whose sum is σ = 1916006400000. Its totient is φ = 806333848320.

The previous prime is 1320121332107. The next prime is 1320121332121. The reversal of 1320121332111 is 1112331210231.

It is not a de Polignac number, because 1320121332111 - 2² = 1320121332107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320121332121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 39988390 + ... + 40021388.

It is an arithmetic number, because the mean of its divisors is an integer number (29937600000).

Almost surely, 2^{1320121332111} is an apocalyptic number.

1320121332111 is a deficient number, since it is larger than the sum of its proper divisors (595885067889).

1320121332111 is a wasteful number, since it uses less digits than its factorization.

1320121332111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33324.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1320121332111 its reverse (1112331210231), we get a palindrome (2432452542342).

The spelling of 1320121332111 in words is "one trillion, three hundred twenty billion, one hundred twenty-one million, three hundred thirty-two thousand, one hundred eleven".