21032455030 has 16 divisors (see below), whose sum is σ = 39163882320. Its totient is φ = 8122879072.

The previous prime is 21032454997. The next prime is 21032455057. The reversal of 21032455030 is 3055423012.

It is a junction number, because it is equal to n+sod(n) for n = 21032454986 and 21032455004.

It is a congruent number.

It is an unprimeable number.

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, 36262564 + ... + 36263143.

It is an arithmetic number, because the mean of its divisors is an integer number (2447742645).

Almost surely, 2^21032455030 is an apocalyptic number.

21032455030 is a deficient number, since it is larger than the sum of its proper divisors (18131427290).

21032455030 is a wasteful number, since it uses less digits than its factorization.

21032455030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72525743.

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 21032455030 its reverse (3055423012), we get a palindrome (24087878042).

The spelling of 21032455030 in words is "twenty-one billion, thirty-two million, four hundred fifty-five thousand, thirty".