21622023443306 has 32 divisors (see below), whose sum is σ = 38473079718528. Its totient is φ = 8984098261440.

The previous prime is 21622023443287. The next prime is 21622023443329. The reversal of 21622023443306 is 60334432022612.

It is a self number, because there is not a number n which added to its sum of digits gives 21622023443306.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 366968021 + ... + 367026936.

It is an arithmetic number, because the mean of its divisors is an integer number (1202283741204).

Almost surely, 2^{21622023443306} is an apocalyptic number.

21622023443306 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

21622023443306 is a deficient number, since it is larger than the sum of its proper divisors (16851056275222).

21622023443306 is a wasteful number, since it uses less digits than its factorization.

21622023443306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733995086.

The product of its (nonzero) digits is 248832, while the sum is 38.

Adding to 21622023443306 its reverse (60334432022612), we get a palindrome (81956455465918).

The spelling of 21622023443306 in words is "twenty-one trillion, six hundred twenty-two billion, twenty-three million, four hundred forty-three thousand, three hundred six".