21031222220334 has 12 divisors (see below), whose sum is σ = 45567648144096. Its totient is φ = 7010407406772.

The previous prime is 21031222220329. The next prime is 21031222220389. The reversal of 21031222220334 is 43302222213012.

21031222220334 is a `hidden beast` number, since 2 + 10 + 312 + 2 + 2 + 2 + 2 + 0 + 334 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 21031222220298 and 21031222220307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 584200617214 + ... + 584200617249.

It is an arithmetic number, because the mean of its divisors is an integer number (3797304012008).

Almost surely, 2^{21031222220334} is an apocalyptic number.

21031222220334 is an abundant number, since it is smaller than the sum of its proper divisors (24536425923762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21031222220334 is a wasteful number, since it uses less digits than its factorization.

21031222220334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168401234471 (or 1168401234468 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 21031222220334 its reverse (43302222213012), we get a palindrome (64333444433346).

The spelling of 21031222220334 in words is "twenty-one trillion, thirty-one billion, two hundred twenty-two million, two hundred twenty thousand, three hundred thirty-four".