20112211142 has 8 divisors (see below), whose sum is σ = 30810195936. Its totient is φ = 9842145832.

The previous prime is 20112211121. The next prime is 20112211159. The reversal of 20112211142 is 24111221102.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20112211142.

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, 106979753 + ... + 106979940.

It is an arithmetic number, because the mean of its divisors is an integer number (3851274492).

Almost surely, 2^20112211142 is an apocalyptic number.

20112211142 is a deficient number, since it is larger than the sum of its proper divisors (10697984794).

20112211142 is a wasteful number, since it uses less digits than its factorization.

20112211142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213959742.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20112211142 its reverse (24111221102), we get a palindrome (44223432244).

The spelling of 20112211142 in words is "twenty billion, one hundred twelve million, two hundred eleven thousand, one hundred forty-two".