21110030102 has 8 divisors (see below), whose sum is σ = 36188623056. Its totient is φ = 9047155752.

The previous prime is 21110030101. The next prime is 21110030111. The reversal of 21110030102 is 20103001112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21110030102² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110030101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 753929633 + ... + 753929660.

It is an arithmetic number, because the mean of its divisors is an integer number (4523577882).

Almost surely, 2^21110030102 is an apocalyptic number.

21110030102 is a deficient number, since it is larger than the sum of its proper divisors (15078592954).

21110030102 is a wasteful number, since it uses less digits than its factorization.

21110030102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507859302.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 21110030102 its reverse (20103001112), we get a palindrome (41213031214).

The spelling of 21110030102 in words is "twenty-one billion, one hundred ten million, thirty thousand, one hundred two".