20121153422 has 8 divisors (see below), whose sum is σ = 30227531400. Its totient is φ = 10045309624.

The previous prime is 20121153419. The next prime is 20121153431. The reversal of 20121153422 is 22435112102.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7631897 + ... + 7634532.

It is an arithmetic number, because the mean of its divisors is an integer number (3778441425).

Almost surely, 2^20121153422 is an apocalyptic number.

20121153422 is a deficient number, since it is larger than the sum of its proper divisors (10106377978).

20121153422 is a wasteful number, since it uses less digits than its factorization.

20121153422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15267090.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 20121153422 its reverse (22435112102), we get a palindrome (42556265524).

The spelling of 20121153422 in words is "twenty billion, one hundred twenty-one million, one hundred fifty-three thousand, four hundred twenty-two".