21222052413501 has 8 divisors (see below), whose sum is σ = 28296395545824. Its totient is φ = 14147872111760.

The previous prime is 21222052413481. The next prime is 21222052413607. The reversal of 21222052413501 is 10531425022212.

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

It is a cyclic number.

It is not a de Polignac number, because 21222052413501 - 2¹¹ = 21222052411453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222052411501) 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, 40403211 + ... + 40925096.

It is an arithmetic number, because the mean of its divisors is an integer number (3537049443228).

Almost surely, 2^{21222052413501} is an apocalyptic number.

It is an amenable number.

21222052413501 is a deficient number, since it is larger than the sum of its proper divisors (7074343132323).

21222052413501 is an equidigital number, since it uses as much as digits as its factorization.

21222052413501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81415291.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 21222052413501 its reverse (10531425022212), we get a palindrome (31753477435713).

The spelling of 21222052413501 in words is "twenty-one trillion, two hundred twenty-two billion, fifty-two million, four hundred thirteen thousand, five hundred one".