21303030012122 has 16 divisors (see below), whose sum is σ = 32047158695040. Its totient is φ = 10620644788128.

The previous prime is 21303030012097. The next prime is 21303030012133. The reversal of 21303030012122 is 22121003030312.

It is a junction number, because it is equal to n+sod(n) for n = 21303030012094 and 21303030012103.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49036223 + ... + 49468749.

It is an arithmetic number, because the mean of its divisors is an integer number (2002947418440).

Almost surely, 2^{21303030012122} is an apocalyptic number.

21303030012122 is a deficient number, since it is larger than the sum of its proper divisors (10744128682918).

21303030012122 is a wasteful number, since it uses less digits than its factorization.

21303030012122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503845.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21303030012122 its reverse (22121003030312), we get a palindrome (43424033042434).

The spelling of 21303030012122 in words is "twenty-one trillion, three hundred three billion, thirty million, twelve thousand, one hundred twenty-two".