142221130000 has 100 divisors (see below), whose sum is σ = 347743270908. Its totient is φ = 56324800000.

The previous prime is 142221129979. The next prime is 142221130001. The reversal of 142221130000 is 31122241.

It can be written as a sum of positive squares in 10 ways, for example, as 77843232016 + 64377897984 = 279004^2 + 253728^2 .

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (142221130001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 939594 + ... + 1080406.

Almost surely, 2^142221130000 is an apocalyptic number.

142221130000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142221130000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173871635454).

142221130000 is an abundant number, since it is smaller than the sum of its proper divisors (205522140908).

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

142221130000 is a wasteful number, since it uses less digits than its factorization.

142221130000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140942 (or 140921 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 142221130000 its reverse (31122241), we get a palindrome (142252252241).

The spelling of 142221130000 in words is "one hundred forty-two billion, two hundred twenty-one million, one hundred thirty thousand".