21213123102022 has 32 divisors (see below), whose sum is σ = 33844677923520. Its totient is φ = 9952804874880.

The previous prime is 21213123101999. The next prime is 21213123102023. The reversal of 21213123102022 is 22020132131212.

It is a junction number, because it is equal to n+sod(n) for n = 21213123101984 and 21213123102002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21213123102023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3668629 + ... + 7475632.

It is an arithmetic number, because the mean of its divisors is an integer number (1057646185110).

Almost surely, 2^{21213123102022} is an apocalyptic number.

21213123102022 is a deficient number, since it is larger than the sum of its proper divisors (12631554821498).

21213123102022 is a wasteful number, since it uses less digits than its factorization.

21213123102022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11145216.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21213123102022 its reverse (22020132131212), we get a palindrome (43233255233234).

The spelling of 21213123102022 in words is "twenty-one trillion, two hundred thirteen billion, one hundred twenty-three million, one hundred two thousand, twenty-two".