21030003120030 has 32 divisors (see below), whose sum is σ = 50486891839488. Its totient is φ = 5606347015200.

The previous prime is 21030003120029. The next prime is 21030003120041. The reversal of 21030003120030 is 3002130003012.

It is a super-2 number, since 2×21030003120030² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21030003119991 and 21030003120009.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103260126 + ... + 103463585.

It is an arithmetic number, because the mean of its divisors is an integer number (1577715369984).

Almost surely, 2^{21030003120030} is an apocalyptic number.

21030003120030 is an abundant number, since it is smaller than the sum of its proper divisors (29456888719458).

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

21030003120030 is a wasteful number, since it uses less digits than its factorization.

21030003120030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206727112.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 21030003120030 its reverse (3002130003012), we get a palindrome (24032133123042).

The spelling of 21030003120030 in words is "twenty-one trillion, thirty billion, three million, one hundred twenty thousand, thirty".