21546873354222 has 24 divisors (see below), whose sum is σ = 46701210062520. Its totient is φ = 7179780688080.

The previous prime is 21546873354221. The next prime is 21546873354289. The reversal of 21546873354222 is 22245337864512.

21546873354222 is a `hidden beast` number, since 2 + 1 + 5 + 4 + 6 + 8 + 73 + 3 + 542 + 22 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21546873354221) 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, 209149572 + ... + 209252567.

It is an arithmetic number, because the mean of its divisors is an integer number (1945883752605).

Almost surely, 2^{21546873354222} is an apocalyptic number.

21546873354222 is an abundant number, since it is smaller than the sum of its proper divisors (25154336708298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21546873354222 is a wasteful number, since it uses less digits than its factorization.

21546873354222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418405008 (or 418405005 counting only the distinct ones).

The product of its digits is 19353600, while the sum is 54.

The spelling of 21546873354222 in words is "twenty-one trillion, five hundred forty-six billion, eight hundred seventy-three million, three hundred fifty-four thousand, two hundred twenty-two".