123211401215 has 16 divisors (see below), whose sum is σ = 170051921472. Its totient is φ = 83949675264.

The previous prime is 123211401197. The next prime is 123211401223. The reversal of 123211401215 is 512104112321.

It is not a de Polignac number, because 123211401215 - 2³⁶ = 54491924479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11205734 + ... + 11216723.

It is an arithmetic number, because the mean of its divisors is an integer number (10628245092).

Almost surely, 2^123211401215 is an apocalyptic number.

123211401215 is a deficient number, since it is larger than the sum of its proper divisors (46840520257).

123211401215 is a wasteful number, since it uses less digits than its factorization.

123211401215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22422626.

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 123211401215 its reverse (512104112321), we get a palindrome (635315513536).

The spelling of 123211401215 in words is "one hundred twenty-three billion, two hundred eleven million, four hundred one thousand, two hundred fifteen".