30011121 has 32 divisors (see below), whose sum is σ = 51367680. Its totient is φ = 16962048.

The previous prime is 30011101. The next prime is 30011123. The reversal of 30011121 is 12111003.

It is not a de Polignac number, because 30011121 - 2⁹ = 30010609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (30011123) 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, 17515 + ... + 19151.

It is an arithmetic number, because the mean of its divisors is an integer number (1605240).

Almost surely, 2^30011121 is an apocalyptic number.

It is an amenable number.

30011121 is a deficient number, since it is larger than the sum of its proper divisors (21356559).

30011121 is a wasteful number, since it uses less digits than its factorization.

30011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1750 (or 1744 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 30011121 is about 5478.2406847454. The cubic root of 30011121 is about 310.7616408883.

Adding to 30011121 its reverse (12111003), we get a palindrome (42122124).

The spelling of 30011121 in words is "thirty million, eleven thousand, one hundred twenty-one".