21120010100012 has 48 divisors (see below), whose sum is σ = 39706876823040. Its totient is φ = 9798734043072.

The previous prime is 21120010099957. The next prime is 21120010100053. The reversal of 21120010100012 is 21000101002112.

It is a super-3 number, since 3×21120010100012³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21120010099966 and 21120010100002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2101748 + ... + 6830619.

It is an arithmetic number, because the mean of its divisors is an integer number (827226600480).

Almost surely, 2^{21120010100012} is an apocalyptic number.

It is an amenable number.

21120010100012 is a deficient number, since it is larger than the sum of its proper divisors (18586866723028).

21120010100012 is a wasteful number, since it uses less digits than its factorization.

21120010100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8933030 (or 8933028 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21120010100012 its reverse (21000101002112), we get a palindrome (42120111102124).

The spelling of 21120010100012 in words is "twenty-one trillion, one hundred twenty billion, ten million, one hundred thousand, twelve".