20012151422 has 4 divisors (see below), whose sum is σ = 30018227136. Its totient is φ = 10006075710.

The previous prime is 20012151407. The next prime is 20012151433. The reversal of 20012151422 is 22415121002.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 20012151394 and 20012151403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5003037854 + ... + 5003037857.

It is an arithmetic number, because the mean of its divisors is an integer number (7504556784).

Almost surely, 2^20012151422 is an apocalyptic number.

20012151422 is a deficient number, since it is larger than the sum of its proper divisors (10006075714).

20012151422 is a wasteful number, since it uses less digits than its factorization.

20012151422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10006075713.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 20012151422 its reverse (22415121002), we get a palindrome (42427272424).

The spelling of 20012151422 in words is "twenty billion, twelve million, one hundred fifty-one thousand, four hundred twenty-two".