12211321011 has 32 divisors (see below), whose sum is σ = 17283465216. Its totient is φ = 7655472000.

The previous prime is 12211321009. The next prime is 12211321043. The reversal of 12211321011 is 11012311221.

It is not a de Polignac number, because 12211321011 - 2¹ = 12211321009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12211321081) 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, 3408241 + ... + 3411821.

It is an arithmetic number, because the mean of its divisors is an integer number (540108288).

Almost surely, 2^12211321011 is an apocalyptic number.

12211321011 is a deficient number, since it is larger than the sum of its proper divisors (5072144205).

12211321011 is a wasteful number, since it uses less digits than its factorization.

12211321011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4643.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 12211321011 its reverse (11012311221), we get a palindrome (23223632232).

The spelling of 12211321011 in words is "twelve billion, two hundred eleven million, three hundred twenty-one thousand, eleven".