21622415212443 has 8 divisors (see below), whose sum is σ = 29824020982800. Its totient is φ = 13917876458528.

The previous prime is 21622415212429. The next prime is 21622415212481. The reversal of 21622415212443 is 34421251422612.

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

It is not a de Polignac number, because 21622415212443 - 2¹³ = 21622415204251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21622415212423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124266754008 + ... + 124266754181.

It is an arithmetic number, because the mean of its divisors is an integer number (3728002622850).

Almost surely, 2^{21622415212443} is an apocalyptic number.

21622415212443 is a deficient number, since it is larger than the sum of its proper divisors (8201605770357).

21622415212443 is a wasteful number, since it uses less digits than its factorization.

21622415212443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248533508221.

The product of its digits is 184320, while the sum is 39.

The spelling of 21622415212443 in words is "twenty-one trillion, six hundred twenty-two billion, four hundred fifteen million, two hundred twelve thousand, four hundred forty-three".