21230211030 has 32 divisors (see below), whose sum is σ = 58231436544. Its totient is φ = 4852619616.

The previous prime is 21230211011. The next prime is 21230211043. The reversal of 21230211030 is 3011203212.

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

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, 50547912 + ... + 50548331.

It is an arithmetic number, because the mean of its divisors is an integer number (1819732392).

Almost surely, 2^21230211030 is an apocalyptic number.

21230211030 is an abundant number, since it is smaller than the sum of its proper divisors (37001225514).

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

21230211030 is a wasteful number, since it uses less digits than its factorization.

21230211030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101096260.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21230211030 its reverse (3011203212), we get a palindrome (24241414242).

The spelling of 21230211030 in words is "twenty-one billion, two hundred thirty million, two hundred eleven thousand, thirty".