340121220112 has 40 divisors (see below), whose sum is σ = 693711085760. Its totient is φ = 161100109440.

The previous prime is 340121220079. The next prime is 340121220113. The reversal of 340121220112 is 211022121043.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 340121220112.

It is not an unprimeable number, because it can be changed into a prime (340121220113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7876693 + ... + 7919755.

It is an arithmetic number, because the mean of its divisors is an integer number (17342777144).

Almost surely, 2^340121220112 is an apocalyptic number.

It is an amenable number.

340121220112 is an abundant number, since it is smaller than the sum of its proper divisors (353589865648).

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

340121220112 is a wasteful number, since it uses less digits than its factorization.

340121220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69071 (or 69065 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 340121220112 its reverse (211022121043), we get a palindrome (551143341155).

The spelling of 340121220112 in words is "three hundred forty billion, one hundred twenty-one million, two hundred twenty thousand, one hundred twelve".