142222432121 has 48 divisors (see below), whose sum is σ = 184937840640. Its totient is φ = 106948274400.

The previous prime is 142222432117. The next prime is 142222432147. The reversal of 142222432121 is 121234222241.

It is a happy number.

142222432121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142222432121 - 2² = 142222432117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142222432181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9628940 + ... + 9643698.

It is an arithmetic number, because the mean of its divisors is an integer number (3852871680).

Almost surely, 2^142222432121 is an apocalyptic number.

142222432121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142222432121 is a deficient number, since it is larger than the sum of its proper divisors (42715408519).

142222432121 is a wasteful number, since it uses less digits than its factorization.

142222432121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15186 (or 15175 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

Adding to 142222432121 its reverse (121234222241), we get a palindrome (263456654362).

The spelling of 142222432121 in words is "one hundred forty-two billion, two hundred twenty-two million, four hundred thirty-two thousand, one hundred twenty-one".