21222052413434 has 64 divisors (see below), whose sum is σ = 33455507500800. Its totient is φ = 10084945920000.

The previous prime is 21222052413433. The next prime is 21222052413473. The reversal of 21222052413434 is 43431425022212.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21222052413394 and 21222052413403.

It is not an unprimeable number, because it can be changed into a prime (21222052413433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2370909659 + ... + 2370918609.

It is an arithmetic number, because the mean of its divisors is an integer number (522742304700).

Almost surely, 2^{21222052413434} is an apocalyptic number.

21222052413434 is a deficient number, since it is larger than the sum of its proper divisors (12233455087366).

21222052413434 is a wasteful number, since it uses less digits than its factorization.

21222052413434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10727.

The product of its (nonzero) digits is 92160, while the sum is 35.

Adding to 21222052413434 its reverse (43431425022212), we get a palindrome (64653477435646).

The spelling of 21222052413434 in words is "twenty-one trillion, two hundred twenty-two billion, fifty-two million, four hundred thirteen thousand, four hundred thirty-four".