21467222073234 has 192 divisors, whose sum is σ = 55247379602688. Its totient is φ = 5897009664000.

The previous prime is 21467222073233. The next prime is 21467222073287. The reversal of 21467222073234 is 43237022276412.

21467222073234 is a `hidden beast` number, since 2 + 146 + 72 + 2 + 207 + 3 + 234 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 21467222073234.

It is not an unprimeable number, because it can be changed into a prime (21467222073233) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 171877552 + ... + 172002404.

It is an arithmetic number, because the mean of its divisors is an integer number (287746768764).

Almost surely, 2^{21467222073234} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21467222073234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27623689801344).

21467222073234 is an abundant number, since it is smaller than the sum of its proper divisors (33780157529454).

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

21467222073234 is a wasteful number, since it uses less digits than its factorization.

21467222073234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125393 (or 125390 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 45.

The spelling of 21467222073234 in words is "twenty-one trillion, four hundred sixty-seven billion, two hundred twenty-two million, seventy-three thousand, two hundred thirty-four".