21200030120022 has 32 divisors (see below), whose sum is σ = 45857575921248. Its totient is φ = 6495090107136.

The previous prime is 21200030119987. The next prime is 21200030120029. The reversal of 21200030120022 is 22002103000212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21200030119983 and 21200030120010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200030120029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 583233453 + ... + 583269800.

It is an arithmetic number, because the mean of its divisors is an integer number (1433049247539).

Almost surely, 2^{21200030120022} is an apocalyptic number.

21200030120022 is an abundant number, since it is smaller than the sum of its proper divisors (24657545801226).

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

21200030120022 is a wasteful number, since it uses less digits than its factorization.

21200030120022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166503504.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21200030120022 its reverse (22002103000212), we get a palindrome (43202133120234).

The spelling of 21200030120022 in words is "twenty-one trillion, two hundred billion, thirty million, one hundred twenty thousand, twenty-two".