12302270442 has 160 divisors (see below), whose sum is σ = 36177799680. Its totient is φ = 3027157920.

The previous prime is 12302270399. The next prime is 12302270443. The reversal of 12302270442 is 24407220321.

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

It is not an unprimeable number, because it can be changed into a prime (12302270443) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 211053 + ... + 262959.

It is an arithmetic number, because the mean of its divisors is an integer number (226111248).

Almost surely, 2^12302270442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12302270442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18088899840).

12302270442 is an abundant number, since it is smaller than the sum of its proper divisors (23875529238).

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

12302270442 is a wasteful number, since it uses less digits than its factorization.

12302270442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51958 (or 51949 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

Adding to 12302270442 its reverse (24407220321), we get a palindrome (36709490763).

The spelling of 12302270442 in words is "twelve billion, three hundred two million, two hundred seventy thousand, four hundred forty-two".