30535221321 has 42 divisors (see below), whose sum is σ = 50322386730. Its totient is φ = 18506141280.

The previous prime is 30535221317. The next prime is 30535221323. The reversal of 30535221321 is 12312253503.

It is a happy number.

30535221321 is a `hidden beast` number, since 3 + 0 + 5 + 3 + 522 + 132 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 30394086921 + 141134400 = 174339^2 + 11880^2 .

It is not a de Polignac number, because 30535221321 - 2² = 30535221317 is a prime.

It is a super-2 number, since 2×30535221321² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (30535221323) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 84876 + ... + 261293.

It is an arithmetic number, because the mean of its divisors is an integer number (1198152065).

Almost surely, 2^30535221321 is an apocalyptic number.

It is an amenable number.

30535221321 is a deficient number, since it is larger than the sum of its proper divisors (19787165409).

30535221321 is an equidigital number, since it uses as much as digits as its factorization.

30535221321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346209 (or 346183 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Adding to 30535221321 its reverse (12312253503), we get a palindrome (42847474824).

The spelling of 30535221321 in words is "thirty billion, five hundred thirty-five million, two hundred twenty-one thousand, three hundred twenty-one".