21242211413330 has 32 divisors (see below), whose sum is σ = 38514142525104. Its totient is φ = 8435216756736.

The previous prime is 21242211413273. The next prime is 21242211413363. The reversal of 21242211413330 is 3331411224212.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 8522353360249 + 12719858053081 = 2919307^2 + 3566491^2 .

It is a super-2 number, since 2×21242211413330² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21242211413293 and 21242211413302.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7958099 + ... + 10286678.

Almost surely, 2^{21242211413330} is an apocalyptic number.

21242211413330 is a deficient number, since it is larger than the sum of its proper divisors (17271931111774).

21242211413330 is a wasteful number, since it uses less digits than its factorization.

21242211413330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18245630.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 21242211413330 its reverse (3331411224212), we get a palindrome (24573622637542).

The spelling of 21242211413330 in words is "twenty-one trillion, two hundred forty-two billion, two hundred eleven million, four hundred thirteen thousand, three hundred thirty".