21022020220130 has 16 divisors (see below), whose sum is σ = 39144451444920. Its totient is φ = 8118849188352.

The previous prime is 21022020220129. The next prime is 21022020220193. The reversal of 21022020220130 is 3102202022012.

It can be written as a sum of positive squares in 4 ways, for example, as 18027573400321 + 2994446819809 = 4245889^2 + 1730447^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21022020220099 and 21022020220108.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 36244862159 + ... + 36244862738.

Almost surely, 2^{21022020220130} is an apocalyptic number.

21022020220130 is a deficient number, since it is larger than the sum of its proper divisors (18122431224790).

21022020220130 is a wasteful number, since it uses less digits than its factorization.

21022020220130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72489724933.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 21022020220130 its reverse (3102202022012), we get a palindrome (24124222242142).

The spelling of 21022020220130 in words is "twenty-one trillion, twenty-two billion, twenty million, two hundred twenty thousand, one hundred thirty".