21201354030 has 32 divisors (see below), whose sum is σ = 51527347200. Its totient is φ = 5582128032.

The previous prime is 21201353993. The next prime is 21201354043. The reversal of 21201354030 is 3045310212.

It is a junction number, because it is equal to n+sod(n) for n = 21201353988 and 21201354006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4470490 + ... + 4475229.

It is an arithmetic number, because the mean of its divisors is an integer number (1610229600).

Almost surely, 2^21201354030 is an apocalyptic number.

21201354030 is an abundant number, since it is smaller than the sum of its proper divisors (30325993170).

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

21201354030 is a wasteful number, since it uses less digits than its factorization.

21201354030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8945808.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 21201354030 its reverse (3045310212), we get a palindrome (24246664242).

The spelling of 21201354030 in words is "twenty-one billion, two hundred one million, three hundred fifty-four thousand, thirty".