12101211011211 has 32 divisors (see below), whose sum is σ = 18453003276288. Its totient is φ = 6910080468480.

The previous prime is 12101211011207. The next prime is 12101211011237. The reversal of 12101211011211 is 11211011210121.

It is not a de Polignac number, because 12101211011211 - 2² = 12101211011207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12101211011261) 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, 280248255 + ... + 280291431.

It is an arithmetic number, because the mean of its divisors is an integer number (576656352384).

Almost surely, 2^{12101211011211} is an apocalyptic number.

12101211011211 is a deficient number, since it is larger than the sum of its proper divisors (6351792265077).

12101211011211 is a wasteful number, since it uses less digits than its factorization.

12101211011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52331.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 12101211011211 its reverse (11211011210121), we get a palindrome (23312222221332).

The spelling of 12101211011211 in words is "twelve trillion, one hundred one billion, two hundred eleven million, eleven thousand, two hundred eleven".