21671347222 has 8 divisors (see below), whose sum is σ = 37150880976. Its totient is φ = 9287720232.

The previous prime is 21671347213. The next prime is 21671347231. The reversal of 21671347222 is 22274317612.

It is an interprime number because it is at equal distance from previous prime (21671347213) and next prime (21671347231).

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 773976673 + ... + 773976700.

It is an arithmetic number, because the mean of its divisors is an integer number (4643860122).

Almost surely, 2^21671347222 is an apocalyptic number.

21671347222 is a deficient number, since it is larger than the sum of its proper divisors (15479533754).

21671347222 is a wasteful number, since it uses less digits than its factorization.

21671347222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547953382.

The product of its digits is 56448, while the sum is 37.

The spelling of 21671347222 in words is "twenty-one billion, six hundred seventy-one million, three hundred forty-seven thousand, two hundred twenty-two".