21220241222134 has 16 divisors (see below), whose sum is σ = 31850076211200. Its totient is φ = 10603551092904.

The previous prime is 21220241222129. The next prime is 21220241222161. The reversal of 21220241222134 is 43122214202212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21535857 + ... + 22499635.

It is an arithmetic number, because the mean of its divisors is an integer number (1990629763200).

Almost surely, 2^{21220241222134} is an apocalyptic number.

21220241222134 is a deficient number, since it is larger than the sum of its proper divisors (10629834989066).

21220241222134 is a wasteful number, since it uses less digits than its factorization.

21220241222134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970587.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 21220241222134 its reverse (43122214202212), we get a palindrome (64342455424346).

The spelling of 21220241222134 in words is "twenty-one trillion, two hundred twenty billion, two hundred forty-one million, two hundred twenty-two thousand, one hundred thirty-four".