21032012030 has 16 divisors (see below), whose sum is σ = 37884065904. Its totient is φ = 8406928320.

The previous prime is 21032012017. The next prime is 21032012033. The reversal of 21032012030 is 3021023012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21032011996 and 21032012014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21032012033) 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, 719516 + ... + 748175.

It is an arithmetic number, because the mean of its divisors is an integer number (2367754119).

Almost surely, 2^21032012030 is an apocalyptic number.

21032012030 is a deficient number, since it is larger than the sum of its proper divisors (16852053874).

21032012030 is a wasteful number, since it uses less digits than its factorization.

21032012030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469131.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21032012030 its reverse (3021023012), we get a palindrome (24053035042).

The spelling of 21032012030 in words is "twenty-one billion, thirty-two million, twelve thousand, thirty".