21103222122213 has 64 divisors (see below), whose sum is σ = 37169139658752. Its totient is φ = 10310933652480.

The previous prime is 21103222122197. The next prime is 21103222122221. The reversal of 21103222122213 is 31222122230112.

It is not a de Polignac number, because 21103222122213 - 2⁴ = 21103222122197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21103222121213) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4063320 + ... + 7662702.

It is an arithmetic number, because the mean of its divisors is an integer number (580767807168).

Almost surely, 2^{21103222122213} is an apocalyptic number.

It is an amenable number.

21103222122213 is a deficient number, since it is larger than the sum of its proper divisors (16065917536539).

21103222122213 is a wasteful number, since it uses less digits than its factorization.

21103222122213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3600914.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 21103222122213 its reverse (31222122230112), we get a palindrome (52325344352325).

The spelling of 21103222122213 in words is "twenty-one trillion, one hundred three billion, two hundred twenty-two million, one hundred twenty-two thousand, two hundred thirteen".