123121011214 has 4 divisors (see below), whose sum is σ = 184681516824. Its totient is φ = 61560505606.

The previous prime is 123121011137. The next prime is 123121011257. The reversal of 123121011214 is 412110121321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 412110121321 = 248317 ⋅1659613.

It is a junction number, because it is equal to n+sod(n) for n = 123121011191 and 123121011200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30780252802 + ... + 30780252805.

It is an arithmetic number, because the mean of its divisors is an integer number (46170379206).

Almost surely, 2^123121011214 is an apocalyptic number.

123121011214 is a deficient number, since it is larger than the sum of its proper divisors (61560505610).

123121011214 is an equidigital number, since it uses as much as digits as its factorization.

123121011214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61560505609.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 123121011214 its reverse (412110121321), we get a palindrome (535231132535).

The spelling of 123121011214 in words is "one hundred twenty-three billion, one hundred twenty-one million, eleven thousand, two hundred fourteen".