21110121002102 has 8 divisors (see below), whose sum is σ = 34543834367112. Its totient is φ = 9595509546400.

The previous prime is 21110121002081. The next prime is 21110121002141. The reversal of 21110121002102 is 20120012101112.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479775477299 + ... + 479775477342.

It is an arithmetic number, because the mean of its divisors is an integer number (4317979295889).

Almost surely, 2^{21110121002102} is an apocalyptic number.

21110121002102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21110121002102 is a deficient number, since it is larger than the sum of its proper divisors (13433713365010).

21110121002102 is a wasteful number, since it uses less digits than its factorization.

21110121002102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959550954654.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21110121002102 its reverse (20120012101112), we get a palindrome (41230133103214).

The spelling of 21110121002102 in words is "twenty-one trillion, one hundred ten billion, one hundred twenty-one million, two thousand, one hundred two".