21001111300230 has 32 divisors (see below), whose sum is σ = 50403076869600. Its totient is φ = 5600250819072.

The previous prime is 21001111300193. The next prime is 21001111300231. The reversal of 21001111300230 is 3200311110012.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21001111300231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 991086 + ... + 6556254.

It is an arithmetic number, because the mean of its divisors is an integer number (1575096152175).

Almost surely, 2^{21001111300230} is an apocalyptic number.

21001111300230 is an abundant number, since it is smaller than the sum of its proper divisors (29401965569370).

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

21001111300230 is a wasteful number, since it uses less digits than its factorization.

21001111300230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5690968.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 21001111300230 its reverse (3200311110012), we get a palindrome (24201422410242).

The spelling of 21001111300230 in words is "twenty-one trillion, one billion, one hundred eleven million, three hundred thousand, two hundred thirty".