30621135210123 has 32 divisors (see below), whose sum is σ = 42914479104000. Its totient is φ = 19404467710496.

The previous prime is 30621135210121. The next prime is 30621135210157. The reversal of 30621135210123 is 32101253112603.

It is a cyclic number.

It is not a de Polignac number, because 30621135210123 - 2¹ = 30621135210121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30621135210121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21483423 + ... + 22864376.

It is an arithmetic number, because the mean of its divisors is an integer number (1341077472000).

Almost surely, 2^{30621135210123} is an apocalyptic number.

30621135210123 is a deficient number, since it is larger than the sum of its proper divisors (12293343893877).

30621135210123 is a wasteful number, since it uses less digits than its factorization.

30621135210123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44347991.

The product of its (nonzero) digits is 6480, while the sum is 30.

Adding to 30621135210123 its reverse (32101253112603), we get a palindrome (62722388322726).

The spelling of 30621135210123 in words is "thirty trillion, six hundred twenty-one billion, one hundred thirty-five million, two hundred ten thousand, one hundred twenty-three".