30404100021 has 32 divisors (see below), whose sum is σ = 42012615168. Its totient is φ = 19543265280.

The previous prime is 30404099983. The next prime is 30404100049. The reversal of 30404100021 is 12000140403.

It is not a de Polignac number, because 30404100021 - 2¹⁴ = 30404083637 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30404102021) 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, 5803015 + ... + 5808251.

It is an arithmetic number, because the mean of its divisors is an integer number (1312894224).

Almost surely, 2^30404100021 is an apocalyptic number.

It is an amenable number.

30404100021 is a deficient number, since it is larger than the sum of its proper divisors (11608515147).

30404100021 is a wasteful number, since it uses less digits than its factorization.

30404100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5741.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 30404100021 its reverse (12000140403), we get a palindrome (42404240424).

The spelling of 30404100021 in words is "thirty billion, four hundred four million, one hundred thousand, twenty-one".