212103131221311 has 16 divisors (see below), whose sum is σ = 308514790846080. Its totient is φ = 128546874991520.

The previous prime is 212103131221277. The next prime is 212103131221343. The reversal of 212103131221311 is 113122131301212.

It is a cyclic number.

It is not a de Polignac number, because 212103131221311 - 2³⁴ = 212085951352127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212103131221381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2804421 + ... + 20786318.

It is an arithmetic number, because the mean of its divisors is an integer number (19282174427880).

Almost surely, 2^{212103131221311} is an apocalyptic number.

212103131221311 is a deficient number, since it is larger than the sum of its proper divisors (96411659624769).

212103131221311 is a wasteful number, since it uses less digits than its factorization.

212103131221311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23863206.

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 212103131221311 its reverse (113122131301212), we get a palindrome (325225262522523).

The spelling of 212103131221311 in words is "two hundred twelve trillion, one hundred three billion, one hundred thirty-one million, two hundred twenty-one thousand, three hundred eleven".