21103031213222 has 16 divisors (see below), whose sum is σ = 37343612838912. Its totient is φ = 8752409258760.

The previous prime is 21103031213189. The next prime is 21103031213263. The reversal of 21103031213222 is 22231213030112.

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, 24312247508 + ... + 24312248375.

It is an arithmetic number, because the mean of its divisors is an integer number (2333975802432).

Almost surely, 2^{21103031213222} is an apocalyptic number.

21103031213222 is a deficient number, since it is larger than the sum of its proper divisors (16240581625690).

21103031213222 is a wasteful number, since it uses less digits than its factorization.

21103031213222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48624495923.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21103031213222 its reverse (22231213030112), we get a palindrome (43334244243334).

The spelling of 21103031213222 in words is "twenty-one trillion, one hundred three billion, thirty-one million, two hundred thirteen thousand, two hundred twenty-two".