22021121455443 has 12 divisors (see below), whose sum is σ = 34699948960248. Its totient is φ = 13346134215360.

The previous prime is 22021121455363. The next prime is 22021121455469. The reversal of 22021121455443 is 34455412112022.

22021121455443 is a `hidden beast` number, since 2 + 20 + 21 + 1 + 21 + 4 + 554 + 43 = 666.

It is not a de Polignac number, because 22021121455443 - 2²¹ = 22021119358291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22021121455398 and 22021121455407.

It is not an unprimeable number, because it can be changed into a prime (22021121455483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111217785030 + ... + 111217785227.

It is an arithmetic number, because the mean of its divisors is an integer number (2891662413354).

Almost surely, 2^{22021121455443} is an apocalyptic number.

22021121455443 is a deficient number, since it is larger than the sum of its proper divisors (12678827504805).

22021121455443 is a wasteful number, since it uses less digits than its factorization.

22021121455443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222435570274 (or 222435570271 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 22021121455443 its reverse (34455412112022), we get a palindrome (56476533567465).

The spelling of 22021121455443 in words is "twenty-two trillion, twenty-one billion, one hundred twenty-one million, four hundred fifty-five thousand, four hundred forty-three".