12211511450142 has 8 divisors (see below), whose sum is σ = 24423022900296. Its totient is φ = 4070503816712.

The previous prime is 12211511450081. The next prime is 12211511450213. The reversal of 12211511450142 is 24105411511221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

12211511450142 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1017625954173 + ... + 1017625954184.

It is an arithmetic number, because the mean of its divisors is an integer number (3052877862537).

Almost surely, 2^{12211511450142} is an apocalyptic number.

12211511450142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12211511450142 is a wasteful number, since it uses less digits than its factorization.

12211511450142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2035251908362.

The product of its (nonzero) digits is 3200, while the sum is 30.

Adding to 12211511450142 its reverse (24105411511221), we get a palindrome (36316922961363).

The spelling of 12211511450142 in words is "twelve trillion, two hundred eleven billion, five hundred eleven million, four hundred fifty thousand, one hundred forty-two".