21222014513601 has 16 divisors (see below), whose sum is σ = 30887451152640. Its totient is φ = 12853882642320.

The previous prime is 21222014513543. The next prime is 21222014513671. The reversal of 21222014513601 is 10631541022212.

It is not a de Polignac number, because 21222014513601 - 2⁶ = 21222014513537 is a prime.

It is a super-2 number, since 2×21222014513601² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21222014513671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198554155 + ... + 198661008.

It is an arithmetic number, because the mean of its divisors is an integer number (1930465697040).

Almost surely, 2^{21222014513601} is an apocalyptic number.

It is an amenable number.

21222014513601 is a deficient number, since it is larger than the sum of its proper divisors (9665436639039).

21222014513601 is a wasteful number, since it uses less digits than its factorization.

21222014513601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397216796.

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 21222014513601 its reverse (10631541022212), we get a palindrome (31853555535813).

The spelling of 21222014513601 in words is "twenty-one trillion, two hundred twenty-two billion, fourteen million, five hundred thirteen thousand, six hundred one".