21133223121222 has 24 divisors (see below), whose sum is σ = 45789620049576. Its totient is φ = 7044258483456.

The previous prime is 21133223121191. The next prime is 21133223121233. The reversal of 21133223121222 is 22212132233112.

21133223121222 is a `hidden beast` number, since 2 + 1 + 1 + 3 + 322 + 312 + 1 + 2 + 22 = 666.

It is a super-2 number, since 2×21133223121222² (a number of 27 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11560308 + ... + 13262999.

It is an arithmetic number, because the mean of its divisors is an integer number (1907900835399).

Almost surely, 2^{21133223121222} is an apocalyptic number.

21133223121222 is an abundant number, since it is smaller than the sum of its proper divisors (24656396928354).

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

21133223121222 is a wasteful number, since it uses less digits than its factorization.

21133223121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24870612 (or 24870609 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 21133223121222 its reverse (22212132233112), we get a palindrome (43345355354334).

The spelling of 21133223121222 in words is "twenty-one trillion, one hundred thirty-three billion, two hundred twenty-three million, one hundred twenty-one thousand, two hundred twenty-two".