1320012111 has 48 divisors (see below), whose sum is σ = 2055967200. Its totient is φ = 751322880.

The previous prime is 1320012103. The next prime is 1320012119. The reversal of 1320012111 is 1112100231.

It is an interprime number because it is at equal distance from previous prime (1320012103) and next prime (1320012119).

It is not a de Polignac number, because 1320012111 - 2³ = 1320012103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320012119) 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, 387805 + ... + 391193.

It is an arithmetic number, because the mean of its divisors is an integer number (42832650).

Almost surely, 2^1320012111 is an apocalyptic number.

1320012111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1320012111 is a deficient number, since it is larger than the sum of its proper divisors (735955089).

1320012111 is a wasteful number, since it uses less digits than its factorization.

1320012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3480 (or 3469 counting only the distinct ones).

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

The square root of 1320012111 is about 36331.9709209396. The cubic root of 1320012111 is about 1096.9646653496.

Adding to 1320012111 its reverse (1112100231), we get a palindrome (2432112342).

The spelling of 1320012111 in words is "one billion, three hundred twenty million, twelve thousand, one hundred eleven".