21001112330010 has 64 divisors (see below), whose sum is σ = 50838183719424. Its totient is φ = 5552015040000.

The previous prime is 21001112329979. The next prime is 21001112330069. The reversal of 21001112330010 is 1003321110012.

It is a happy number.

It is a super-2 number, since 2×21001112330010² (a number of 27 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 315361 + ... + 6488580.

It is an arithmetic number, because the mean of its divisors is an integer number (794346620616).

Almost surely, 2^{21001112330010} is an apocalyptic number.

21001112330010 is an abundant number, since it is smaller than the sum of its proper divisors (29837071389414).

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

21001112330010 is a wasteful number, since it uses less digits than its factorization.

21001112330010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6804839.

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

Adding to 21001112330010 its reverse (1003321110012), we get a palindrome (22004433440022).

The spelling of 21001112330010 in words is "twenty-one trillion, one billion, one hundred twelve million, three hundred thirty thousand, ten".