1323212011 has 32 divisors (see below), whose sum is σ = 1539772416. Its totient is φ = 1125300000.

The previous prime is 1323211991. The next prime is 1323212069. The reversal of 1323212011 is 1102123231.

It is not a de Polignac number, because 1323212011 - 2¹¹ = 1323209963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323212081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4254546 + ... + 4254856.

It is an arithmetic number, because the mean of its divisors is an integer number (48117888).

Almost surely, 2^1323212011 is an apocalyptic number.

1323212011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1323212011 is a deficient number, since it is larger than the sum of its proper divisors (216560405).

1323212011 is a wasteful number, since it uses less digits than its factorization.

1323212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1323212011 is about 36375.9812376244. The cubic root of 1323212011 is about 1097.8503503179.

Adding to 1323212011 its reverse (1102123231), we get a palindrome (2425335242).

The spelling of 1323212011 in words is "one billion, three hundred twenty-three million, two hundred twelve thousand, eleven".