12123221301450 has 96 divisors (see below), whose sum is σ = 38178525525120. Its totient is φ = 2771022009600.

The previous prime is 12123221301341. The next prime is 12123221301469. The reversal of 12123221301450 is 5410312232121.

It is a happy number.

12123221301450 is a `hidden beast` number, since 12 + 123 + 221 + 301 + 4 + 5 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 641430831 + ... + 641449730.

It is an arithmetic number, because the mean of its divisors is an integer number (397692974220).

Almost surely, 2^{12123221301450} is an apocalyptic number.

12123221301450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12123221301450 is an abundant number, since it is smaller than the sum of its proper divisors (26055304223670).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12123221301450 is a wasteful number, since it uses less digits than its factorization.

12123221301450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282880589 (or 1282880578 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 12123221301450 its reverse (5410312232121), we get a palindrome (17533533533571).

The spelling of 12123221301450 in words is "twelve trillion, one hundred twenty-three billion, two hundred twenty-one million, three hundred one thousand, four hundred fifty".