20431214222 has 4 divisors (see below), whose sum is σ = 30646821336. Its totient is φ = 10215607110.

The previous prime is 20431214201. The next prime is 20431214233. The reversal of 20431214222 is 22241213402.

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

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, 5107803554 + ... + 5107803557.

It is an arithmetic number, because the mean of its divisors is an integer number (7661705334).

Almost surely, 2^20431214222 is an apocalyptic number.

20431214222 is a deficient number, since it is larger than the sum of its proper divisors (10215607114).

20431214222 is a wasteful number, since it uses less digits than its factorization.

20431214222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10215607113.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 20431214222 its reverse (22241213402), we get a palindrome (42672427624).

The spelling of 20431214222 in words is "twenty billion, four hundred thirty-one million, two hundred fourteen thousand, two hundred twenty-two".