30213121004 has 24 divisors (see below), whose sum is σ = 61072513488. Its totient is φ = 12925399040.

The previous prime is 30213120991. The next prime is 30213121007. The reversal of 30213121004 is 40012131203.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (30213121007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20195189 + ... + 20196684.

It is an arithmetic number, because the mean of its divisors is an integer number (2544688062).

Almost surely, 2^30213121004 is an apocalyptic number.

30213121004 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

30213121004 is an abundant number, since it is smaller than the sum of its proper divisors (30859392484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30213121004 is a wasteful number, since it uses less digits than its factorization.

30213121004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40391905 (or 40391903 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 30213121004 its reverse (40012131203), we get a palindrome (70225252207).

The spelling of 30213121004 in words is "thirty billion, two hundred thirteen million, one hundred twenty-one thousand, four".