21111203301230 has 32 divisors (see below), whose sum is σ = 43590206324160. Its totient is φ = 7211219304960.

The previous prime is 21111203301173. The next prime is 21111203301271. The reversal of 21111203301230 is 3210330211112.

It is a happy number.

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, 560554811 + ... + 560592470.

It is an arithmetic number, because the mean of its divisors is an integer number (1362193947630).

Almost surely, 2^{21111203301230} is an apocalyptic number.

21111203301230 is an abundant number, since it is smaller than the sum of its proper divisors (22479003022930).

21111203301230 is a wasteful number, since it uses less digits than its factorization.

21111203301230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121147564.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21111203301230 its reverse (3210330211112), we get a palindrome (24321533512342).

The spelling of 21111203301230 in words is "twenty-one trillion, one hundred eleven billion, two hundred three million, three hundred one thousand, two hundred thirty".