21121120000102 has 16 divisors (see below), whose sum is σ = 31687160302512. Its totient is φ = 10558733401440.

The previous prime is 21121120000091. The next prime is 21121120000103. The reversal of 21121120000102 is 20100002112112.

It is a super-2 number, since 2×21121120000102² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21121120000103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388078852 + ... + 388133272.

It is an arithmetic number, because the mean of its divisors is an integer number (1980447518907).

Almost surely, 2^{21121120000102} is an apocalyptic number.

21121120000102 is a deficient number, since it is larger than the sum of its proper divisors (10566040302410).

21121120000102 is a wasteful number, since it uses less digits than its factorization.

21121120000102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84423.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21121120000102 its reverse (20100002112112), we get a palindrome (41221122112214).

The spelling of 21121120000102 in words is "twenty-one trillion, one hundred twenty-one billion, one hundred twenty million, one hundred two", and thus it is an aban number.