30503221521006 has 64 divisors (see below), whose sum is σ = 66534147993600. Its totient is φ = 9266346625536.

The previous prime is 30503221520977. The next prime is 30503221521007. The reversal of 30503221521006 is 60012512230503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30503221521007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138208150 + ... + 138428678.

It is an arithmetic number, because the mean of its divisors is an integer number (1039596062400).

Almost surely, 2^{30503221521006} is an apocalyptic number.

30503221521006 is an abundant number, since it is smaller than the sum of its proper divisors (36030926472594).

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

30503221521006 is a wasteful number, since it uses less digits than its factorization.

30503221521006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243073.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 30503221521006 its reverse (60012512230503), we get a palindrome (90515733751509).

The spelling of 30503221521006 in words is "thirty trillion, five hundred three billion, two hundred twenty-one million, five hundred twenty-one thousand, six".