21101000310030 has 16 divisors (see below), whose sum is σ = 50642400744144. Its totient is φ = 5626933416000.

The previous prime is 21101000310007. The next prime is 21101000310037. The reversal of 21101000310030 is 3001300010112.

It is a super-2 number, since 2×21101000310030² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21101000309988 and 21101000310015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101000310037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351683338471 + ... + 351683338530.

It is an arithmetic number, because the mean of its divisors is an integer number (3165150046509).

Almost surely, 2^{21101000310030} is an apocalyptic number.

21101000310030 is an abundant number, since it is smaller than the sum of its proper divisors (29541400434114).

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

21101000310030 is a wasteful number, since it uses less digits than its factorization.

21101000310030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703366677011.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 21101000310030 its reverse (3001300010112), we get a palindrome (24102300320142).

The spelling of 21101000310030 in words is "twenty-one trillion, one hundred one billion, three hundred ten thousand, thirty".