30221021011 has 4 divisors (see below), whose sum is σ = 30318195024. Its totient is φ = 30123847000.

The previous prime is 30221020961. The next prime is 30221021041. The reversal of 30221021011 is 11012012203.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30221021011 - 2⁷ = 30221020883 is a prime.

It is a super-2 number, since 2×30221021011² (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 = 30221020982 and 30221021000.

It is not an unprimeable number, because it can be changed into a prime (30221021041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48586540 + ... + 48587161.

It is an arithmetic number, because the mean of its divisors is an integer number (7579548756).

Almost surely, 2^30221021011 is an apocalyptic number.

30221021011 is a deficient number, since it is larger than the sum of its proper divisors (97174013).

30221021011 is an equidigital number, since it uses as much as digits as its factorization.

30221021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97174012.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 30221021011 its reverse (11012012203), we get a palindrome (41233033214).

The spelling of 30221021011 in words is "thirty billion, two hundred twenty-one million, twenty-one thousand, eleven".