21330002020122 has 12 divisors (see below), whose sum is σ = 46215004376970. Its totient is φ = 7110000673368.

The previous prime is 21330002020121. The next prime is 21330002020241. The reversal of 21330002020122 is 22102020003312.

It can be written as a sum of positive squares in only one way, i.e., 20097549014841 + 1232453005281 = 4483029^2 + 1110159^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1185000112229 = 21330002020122 / (2 + 1 + 3 + 3 + 0 + 0 + 0 + 2 + 0 + 2 + 0 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 21330002020095 and 21330002020104.

It is not an unprimeable number, because it can be changed into a prime (21330002020121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 592500056097 + ... + 592500056132.

Almost surely, 2^{21330002020122} is an apocalyptic number.

21330002020122 is an abundant number, since it is smaller than the sum of its proper divisors (24885002356848).

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

21330002020122 is a wasteful number, since it uses less digits than its factorization.

21330002020122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185000112237 (or 1185000112234 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21330002020122 its reverse (22102020003312), we get a palindrome (43432022023434).

The spelling of 21330002020122 in words is "twenty-one trillion, three hundred thirty billion, two million, twenty thousand, one hundred twenty-two".