21101300030 has 16 divisors (see below), whose sum is σ = 38209782240. Its totient is φ = 8389977312.

The previous prime is 21101300029. The next prime is 21101300047. The reversal of 21101300030 is 3000310112.

It is a junction number, because it is equal to n+sod(n) for n = 21101299984 and 21101300020.

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, 6316085 + ... + 6319424.

It is an arithmetic number, because the mean of its divisors is an integer number (2388111390).

Almost surely, 2^21101300030 is an apocalyptic number.

21101300030 is a deficient number, since it is larger than the sum of its proper divisors (17108482210).

21101300030 is a wasteful number, since it uses less digits than its factorization.

21101300030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12635683.

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 21101300030 its reverse (3000310112), we get a palindrome (24101610142).

The spelling of 21101300030 in words is "twenty-one billion, one hundred one million, three hundred thousand, thirty".