21211222422303 has 12 divisors (see below), whose sum is σ = 30675660141360. Its totient is φ = 14123632908096.

The previous prime is 21211222422241. The next prime is 21211222422317. The reversal of 21211222422303 is 30322422211212.

21211222422303 is a `hidden beast` number, since 2 + 1 + 2 + 11 + 222 + 422 + 3 + 0 + 3 = 666.

It is not a de Polignac number, because 21211222422303 - 2²¹ = 21211220325151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21211222422503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1431828858 + ... + 1431843671.

It is an arithmetic number, because the mean of its divisors is an integer number (2556305011780).

Almost surely, 2^{21211222422303} is an apocalyptic number.

21211222422303 is a deficient number, since it is larger than the sum of its proper divisors (9464437719057).

21211222422303 is a wasteful number, since it uses less digits than its factorization.

21211222422303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2863673358 (or 2863673355 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 21211222422303 its reverse (30322422211212), we get a palindrome (51533644633515).

The spelling of 21211222422303 in words is "twenty-one trillion, two hundred eleven billion, two hundred twenty-two million, four hundred twenty-two thousand, three hundred three".