30031110221 has 8 divisors (see below), whose sum is σ = 35428406784. Its totient is φ = 24910598160.

The previous prime is 30031110211. The next prime is 30031110227. The reversal of 30031110221 is 12201113003.

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

It is not a de Polignac number, because 30031110221 - 2²² = 30026915917 is a prime.

It is a super-2 number, since 2×30031110221² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30031110196 and 30031110205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30031110227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69195890 + ... + 69196323.

It is an arithmetic number, because the mean of its divisors is an integer number (4428550848).

Almost surely, 2^30031110221 is an apocalyptic number.

30031110221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30031110221 is a deficient number, since it is larger than the sum of its proper divisors (5397296563).

30031110221 is a wasteful number, since it uses less digits than its factorization.

30031110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138392251.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 30031110221 its reverse (12201113003), we get a palindrome (42232223224).

The spelling of 30031110221 in words is "thirty billion, thirty-one million, one hundred ten thousand, two hundred twenty-one".