21321103020122 has 8 divisors (see below), whose sum is σ = 31981733081172. Its totient is φ = 10660525326400.

The previous prime is 21321103020121. The next prime is 21321103020143. The reversal of 21321103020122 is 22102030112312.

It can be written as a sum of positive squares in 2 ways, for example, as 17622708639481 + 3698394380641 = 4197941^2 + 1923121^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21321103020094 and 21321103020103.

It is not an unprimeable number, because it can be changed into a prime (21321103020121) 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 3 ways as a sum of consecutive naturals, for example, 12057629 + ... + 13712352.

Almost surely, 2^{21321103020122} is an apocalyptic number.

21321103020122 is a deficient number, since it is larger than the sum of its proper divisors (10660630061050).

21321103020122 is a wasteful number, since it uses less digits than its factorization.

21321103020122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26183664.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21321103020122 its reverse (22102030112312), we get a palindrome (43423133132434).

The spelling of 21321103020122 in words is "twenty-one trillion, three hundred twenty-one billion, one hundred three million, twenty thousand, one hundred twenty-two".