30221132121 has 12 divisors (see below), whose sum is σ = 43914142272. Its totient is φ = 20026777176.

The previous prime is 30221132107. The next prime is 30221132171. The reversal of 30221132121 is 12123112203.

30221132121 is a `hidden beast` number, since 302 + 21 + 1 + 321 + 21 = 666.

It is not a de Polignac number, because 30221132121 - 2⁶ = 30221132057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30221132094 and 30221132103.

It is not an unprimeable number, because it can be changed into a prime (30221132171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10052101 + ... + 10055106.

It is an arithmetic number, because the mean of its divisors is an integer number (3659511856).

Almost surely, 2^30221132121 is an apocalyptic number.

It is an amenable number.

30221132121 is a deficient number, since it is larger than the sum of its proper divisors (13693010151).

30221132121 is a wasteful number, since it uses less digits than its factorization.

30221132121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20107380 (or 20107377 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 30221132121 its reverse (12123112203), we get a palindrome (42344244324).

The spelling of 30221132121 in words is "thirty billion, two hundred twenty-one million, one hundred thirty-two thousand, one hundred twenty-one".